chore: install google-cloud-testutils (via synth) (#26)

This PR was generated using Autosynth. 🌈


<details><summary>Log from Synthtool</summary>

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2020-04-25 05:12:14,159 synthtool > Executing /tmpfs/src/git/autosynth/working_repo/synth.py.
On branch autosynth
nothing to commit, working tree clean
2020-04-25 05:12:14,227 synthtool > Ensuring dependencies.
2020-04-25 05:12:14,232 synthtool > Pulling artman image.
latest: Pulling from googleapis/artman
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Digest: sha256:b3b47805231a305d0f40c4bf069df20f6a2635574e6d4259fac651d3f9f6e098
Status: Downloaded newer image for googleapis/artman:latest
2020-04-25 05:12:57,328 synthtool > Cloning googleapis.
2020-04-25 05:12:59,477 synthtool > Running generator for google/cloud/bigquery/storage/artman_bigquerystorage_v1beta1.yaml.
2020-04-25 05:13:15,786 synthtool > Generated code into /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/python/bigquerystorage-v1beta1.
2020-04-25 05:13:15,787 synthtool > Copy: /home/kbuilder/.cache/synthtool/googleapis/google/cloud/bigquery/storage/v1beta1/avro.proto to /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/python/bigquerystorage-v1beta1/google/cloud/bigquery_storage_v1beta1/proto/avro.proto
2020-04-25 05:13:15,787 synthtool > Copy: /home/kbuilder/.cache/synthtool/googleapis/google/cloud/bigquery/storage/v1beta1/table_reference.proto to /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/python/bigquerystorage-v1beta1/google/cloud/bigquery_storage_v1beta1/proto/table_reference.proto
2020-04-25 05:13:15,787 synthtool > Copy: /home/kbuilder/.cache/synthtool/googleapis/google/cloud/bigquery/storage/v1beta1/arrow.proto to /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/python/bigquerystorage-v1beta1/google/cloud/bigquery_storage_v1beta1/proto/arrow.proto
2020-04-25 05:13:15,788 synthtool > Copy: /home/kbuilder/.cache/synthtool/googleapis/google/cloud/bigquery/storage/v1beta1/storage.proto to /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/python/bigquerystorage-v1beta1/google/cloud/bigquery_storage_v1beta1/proto/storage.proto
2020-04-25 05:13:15,788 synthtool > Copy: /home/kbuilder/.cache/synthtool/googleapis/google/cloud/bigquery/storage/v1beta1/read_options.proto to /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/python/bigquerystorage-v1beta1/google/cloud/bigquery_storage_v1beta1/proto/read_options.proto
2020-04-25 05:13:15,788 synthtool > Placed proto files into /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/python/bigquerystorage-v1beta1/google/cloud/bigquery_storage_v1beta1/proto.
2020-04-25 05:13:15,820 synthtool > Replaced 'from google.cloud.bigquery.storage_v1beta1.proto' in google/cloud/bigquery_storage_v1beta1/proto/storage_pb2.py.
2020-04-25 05:13:15,821 synthtool > Replaced 'from google.cloud.bigquery.storage_v1beta1.proto' in google/cloud/bigquery_storage_v1beta1/proto/storage_pb2_grpc.py.
2020-04-25 05:13:15,821 synthtool > Replaced 'google-cloud-bigquerystorage' in google/cloud/bigquery_storage_v1beta1/gapic/big_query_storage_client.py.
2020-04-25 05:13:15,822 synthtool > Replaced 'import google.api_core.gapic_v1.method\n' in google/cloud/bigquery_storage_v1beta1/gapic/big_query_storage_client.py.
2020-04-25 05:13:15,823 synthtool > Replaced 'from google.cloud import bigquery_storage_v1beta1' in tests/unit/gapic/v1beta1/test_big_query_storage_client_v1beta1.py.
2020-04-25 05:13:15,824 synthtool > Replaced 'bigquery_storage_v1beta1.BigQueryStorageClient' in tests/unit/gapic/v1beta1/test_big_query_storage_client_v1beta1.py.
2020-04-25 05:13:15,824 synthtool > Replaced 'if transport:' in google/cloud/bigquery_storage_v1beta1/gapic/big_query_storage_client.py.
2020-04-25 05:13:15,825 synthtool > Replaced 'metadata.append\\(routing_metadata\\)' in google/cloud/bigquery_storage_v1beta1/gapic/big_query_storage_client.py.
2020-04-25 05:13:15,826 synthtool > Replaced 'if channel is not None and credentials is not None:' in google/cloud/bigquery_storage_v1beta1/gapic/transports/big_query_storage_grpc_transport.py.
2020-04-25 05:13:15,826 synthtool > Replaced 'if channel is None:' in google/cloud/bigquery_storage_v1beta1/gapic/transports/big_query_storage_grpc_transport.py.
2020-04-25 05:13:15,827 synthtool > Replaced 'google.api_core.grpc_helpers.create_channel\\(' in google/cloud/bigquery_storage_v1beta1/gapic/transports/big_query_storage_grpc_transport.py.
2020-04-25 05:13:15,828 synthtool > Replaced '"""Attributes:' in google/cloud/bigquery_storage_v1beta1/proto/storage_pb2.py.
2020-04-25 05:13:15,828 synthtool > Running generator for google/cloud/bigquery/storage/artman_bigquerystorage_v1beta2.yaml.
2020-04-25 05:13:30,263 synthtool > Generated code into /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/python/bigquerystorage-v1beta2.
2020-04-25 05:13:30,264 synthtool > Copy: /home/kbuilder/.cache/synthtool/googleapis/google/cloud/bigquery/storage/v1beta2/avro.proto to /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/python/bigquerystorage-v1beta2/google/cloud/bigquery_storage_v1beta2/proto/avro.proto
2020-04-25 05:13:30,264 synthtool > Copy: /home/kbuilder/.cache/synthtool/googleapis/google/cloud/bigquery/storage/v1beta2/stream.proto to /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/python/bigquerystorage-v1beta2/google/cloud/bigquery_storage_v1beta2/proto/stream.proto
2020-04-25 05:13:30,265 synthtool > Copy: /home/kbuilder/.cache/synthtool/googleapis/google/cloud/bigquery/storage/v1beta2/arrow.proto to /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/python/bigquerystorage-v1beta2/google/cloud/bigquery_storage_v1beta2/proto/arrow.proto
2020-04-25 05:13:30,265 synthtool > Copy: /home/kbuilder/.cache/synthtool/googleapis/google/cloud/bigquery/storage/v1beta2/storage.proto to /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/python/bigquerystorage-v1beta2/google/cloud/bigquery_storage_v1beta2/proto/storage.proto
2020-04-25 05:13:30,265 synthtool > Placed proto files into /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/python/bigquerystorage-v1beta2/google/cloud/bigquery_storage_v1beta2/proto.
2020-04-25 05:13:30,304 synthtool > Replaced 'from google.cloud.bigquery.storage_v1beta2.proto' in google/cloud/bigquery_storage_v1beta2/proto/storage_pb2.py.
2020-04-25 05:13:30,304 synthtool > Replaced 'from google.cloud.bigquery.storage_v1beta2.proto' in google/cloud/bigquery_storage_v1beta2/proto/storage_pb2_grpc.py.
2020-04-25 05:13:30,305 synthtool > Replaced 'from google.cloud.bigquery.storage_v1beta2.proto' in google/cloud/bigquery_storage_v1beta2/proto/stream_pb2.py.
2020-04-25 05:13:30,305 synthtool > Replaced 'google-cloud-bigquerystorage' in google/cloud/bigquery_storage_v1beta2/gapic/big_query_read_client.py.
2020-04-25 05:13:30,306 synthtool > Replaced 'import google.api_core.gapic_v1.method\n' in google/cloud/bigquery_storage_v1beta2/gapic/big_query_read_client.py.
2020-04-25 05:13:30,306 synthtool > Replaced 'from google.cloud import bigquery_storage_v1beta2' in tests/unit/gapic/v1beta2/test_big_query_read_client_v1beta2.py.
2020-04-25 05:13:30,307 synthtool > Replaced 'bigquery_storage_v1beta2.BigQueryReadClient' in tests/unit/gapic/v1beta2/test_big_query_read_client_v1beta2.py.
2020-04-25 05:13:30,308 synthtool > Replaced 'if transport:' in google/cloud/bigquery_storage_v1beta2/gapic/big_query_read_client.py.
2020-04-25 05:13:30,308 synthtool > Replaced 'metadata.append\\(routing_metadata\\)' in google/cloud/bigquery_storage_v1beta2/gapic/big_query_read_client.py.
2020-04-25 05:13:30,308 synthtool > Replaced 'if channel is not None and credentials is not None:' in google/cloud/bigquery_storage_v1beta2/gapic/transports/big_query_read_grpc_transport.py.
2020-04-25 05:13:30,309 synthtool > Replaced 'if channel is None:' in google/cloud/bigquery_storage_v1beta2/gapic/transports/big_query_read_grpc_transport.py.
2020-04-25 05:13:30,309 synthtool > Replaced 'google.api_core.grpc_helpers.create_channel\\(' in google/cloud/bigquery_storage_v1beta2/gapic/transports/big_query_read_grpc_transport.py.
2020-04-25 05:13:30,310 synthtool > Replaced '"""Attributes:' in google/cloud/bigquery_storage_v1beta2/proto/storage_pb2.py.
2020-04-25 05:13:30,310 synthtool > Running generator for google/cloud/bigquery/storage/artman_bigquerystorage_v1.yaml.
2020-04-25 05:13:44,804 synthtool > Generated code into /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/python/bigquerystorage-v1.
2020-04-25 05:13:44,805 synthtool > Copy: /home/kbuilder/.cache/synthtool/googleapis/google/cloud/bigquery/storage/v1/avro.proto to /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/python/bigquerystorage-v1/google/cloud/bigquery_storage_v1/proto/avro.proto
2020-04-25 05:13:44,805 synthtool > Copy: /home/kbuilder/.cache/synthtool/googleapis/google/cloud/bigquery/storage/v1/stream.proto to /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/python/bigquerystorage-v1/google/cloud/bigquery_storage_v1/proto/stream.proto
2020-04-25 05:13:44,805 synthtool > Copy: /home/kbuilder/.cache/synthtool/googleapis/google/cloud/bigquery/storage/v1/arrow.proto to /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/python/bigquerystorage-v1/google/cloud/bigquery_storage_v1/proto/arrow.proto
2020-04-25 05:13:44,806 synthtool > Copy: /home/kbuilder/.cache/synthtool/googleapis/google/cloud/bigquery/storage/v1/storage.proto to /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/python/bigquerystorage-v1/google/cloud/bigquery_storage_v1/proto/storage.proto
2020-04-25 05:13:44,806 synthtool > Placed proto files into /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/python/bigquerystorage-v1/google/cloud/bigquery_storage_v1/proto.
2020-04-25 05:13:44,849 synthtool > Replaced 'from google.cloud.bigquery.storage_v1.proto' in google/cloud/bigquery_storage_v1/proto/storage_pb2.py.
2020-04-25 05:13:44,850 synthtool > Replaced 'from google.cloud.bigquery.storage_v1.proto' in google/cloud/bigquery_storage_v1/proto/storage_pb2_grpc.py.
2020-04-25 05:13:44,850 synthtool > Replaced 'from google.cloud.bigquery.storage_v1.proto' in google/cloud/bigquery_storage_v1/proto/stream_pb2.py.
2020-04-25 05:13:44,851 synthtool > Replaced 'google-cloud-bigquerystorage' in google/cloud/bigquery_storage_v1/gapic/big_query_read_client.py.
2020-04-25 05:13:44,851 synthtool > Replaced 'import google.api_core.gapic_v1.method\n' in google/cloud/bigquery_storage_v1/gapic/big_query_read_client.py.
2020-04-25 05:13:44,852 synthtool > Replaced 'from google.cloud import bigquery_storage_v1' in tests/unit/gapic/v1/test_big_query_read_client_v1.py.
2020-04-25 05:13:44,852 synthtool > Replaced 'bigquery_storage_v1.BigQueryReadClient' in tests/unit/gapic/v1/test_big_query_read_client_v1.py.
2020-04-25 05:13:44,853 synthtool > Replaced 'if transport:' in google/cloud/bigquery_storage_v1/gapic/big_query_read_client.py.
2020-04-25 05:13:44,853 synthtool > Replaced 'metadata.append\\(routing_metadata\\)' in google/cloud/bigquery_storage_v1/gapic/big_query_read_client.py.
2020-04-25 05:13:44,853 synthtool > Replaced 'if channel is not None and credentials is not None:' in google/cloud/bigquery_storage_v1/gapic/transports/big_query_read_grpc_transport.py.
2020-04-25 05:13:44,854 synthtool > Replaced 'if channel is None:' in google/cloud/bigquery_storage_v1/gapic/transports/big_query_read_grpc_transport.py.
2020-04-25 05:13:44,854 synthtool > Replaced 'google.api_core.grpc_helpers.create_channel\\(' in google/cloud/bigquery_storage_v1/gapic/transports/big_query_read_grpc_transport.py.
2020-04-25 05:13:44,854 synthtool > Replaced '"""Attributes:' in google/cloud/bigquery_storage_v1/proto/storage_pb2.py.
2020-04-25 05:13:44,854 synthtool > Template argument 'system_test_dependencies' is deprecated.Use 'system_test_local_dependencies' or 'system_test_external_dependencies'instead.
.coveragerc
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.github/ISSUE_TEMPLATE/feature_request.md
.github/ISSUE_TEMPLATE/support_request.md
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CODE_OF_CONDUCT.md
CONTRIBUTING.rst
LICENSE
MANIFEST.in
docs/_static/custom.css
docs/_templates/layout.html
docs/conf.py.j2
noxfile.py.j2
renovate.json
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2020-04-25 05:13:44,944 synthtool > Replaced 'session\\.install\\("--pre", "grpcio"\\)' in noxfile.py.
2020-04-25 05:13:44,944 synthtool > Replaced '("3\\.6", "3\\.7"), "3\\.8"' in noxfile.py.
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reformatted /tmpfs/src/git/autosynth/working_repo/google/cloud/bigquery_storage_v1beta2/gapic/big_query_read_client_config.py
reformatted /tmpfs/src/git/autosynth/working_repo/google/cloud/bigquery_storage_v1beta2/gapic/transports/big_query_read_grpc_transport.py
reformatted /tmpfs/src/git/autosynth/working_repo/google/cloud/bigquery_storage_v1beta2/proto/arrow_pb2_grpc.py
reformatted /tmpfs/src/git/autosynth/working_repo/google/cloud/bigquery_storage_v1beta2/gapic/big_query_read_client.py
reformatted /tmpfs/src/git/autosynth/working_repo/google/cloud/bigquery_storage_v1beta2/proto/avro_pb2_grpc.py
reformatted /tmpfs/src/git/autosynth/working_repo/google/cloud/bigquery_storage_v1beta2/proto/avro_pb2.py
reformatted /tmpfs/src/git/autosynth/working_repo/google/cloud/bigquery_storage_v1beta2/proto/arrow_pb2.py
reformatted /tmpfs/src/git/autosynth/working_repo/google/cloud/bigquery_storage_v1beta2/proto/storage_pb2_grpc.py
reformatted /tmpfs/src/git/autosynth/working_repo/google/cloud/bigquery_storage_v1beta2/proto/stream_pb2_grpc.py
reformatted /tmpfs/src/git/autosynth/working_repo/google/cloud/bigquery_storage_v1beta2/types.py
reformatted /tmpfs/src/git/autosynth/working_repo/noxfile.py
reformatted /tmpfs/src/git/autosynth/working_repo/google/cloud/bigquery_storage_v1beta2/proto/stream_pb2.py
reformatted /tmpfs/src/git/autosynth/working_repo/google/cloud/bigquery_storage_v1beta2/proto/storage_pb2.py
reformatted /tmpfs/src/git/autosynth/working_repo/tests/unit/gapic/v1/test_big_query_read_client_v1.py
reformatted /tmpfs/src/git/autosynth/working_repo/tests/unit/gapic/v1beta1/test_big_query_storage_client_v1beta1.py
reformatted /tmpfs/src/git/autosynth/working_repo/tests/unit/gapic/v1beta2/test_big_query_read_client_v1beta2.py
reformatted /tmpfs/src/git/autosynth/working_repo/google/cloud/bigquery_storage_v1beta1/proto/storage_pb2.py
All done! ✨ 🍰 ✨
49 files reformatted, 31 files left unchanged.
Session blacken was successful.
2020-04-25 05:13:51,752 synthtool > Wrote metadata to synth.metadata.

```
</details>

Author: yoshi-automation

noxfile.py

@@ -113,8 +113,7 @@ def system(session):
 
     # Install all test dependencies, then install this package into the
     # virtualenv's dist-packages.
-    session.install("mock", "pytest")
-    session.install("git+https://github.com/googleapis/python-test-utils")
+    session.install("mock", "pytest", "google-cloud-testutils")
     session.install("-e", ".[fastavro,pandas,pyarrow]")
     session.install("-e", ".")
 

synth.metadata

@@ -11,22 +11,22 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/python-bigquery-storage.git",
-        "sha": "49b941a207af28a3a30b96cd6eda22b6eda0a0f0"
+        "sha": "9812244202f131142286fc48126ecb633515a6bc"
       }
     },
     {
       "git": {
         "name": "googleapis",
         "remote": "https://github.com/googleapis/googleapis.git",
-        "sha": "bcc476396e799806d3355e87246c6becf6250a70",
-        "internalRef": "306974763"
+        "sha": "28e76243c23cc282efbb288cb558c174e3e5e9ee",
+        "internalRef": "308294748"
       }
     },
     {
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "6980131905b652563280e4d2482384d4acc9eafc"
+        "sha": "01b6f23d24b27878b48667ce597876d66b59780e"
       }
     }
   ],