chore: Migrate gsutil usage to gcloud storage

Author: bhandarivijay-png

.kokoro/release-nightly.sh

@@ -93,9 +93,9 @@ for gcs_path in gs://vertex_sdk_private_releases/bigframe/ \
                     gs://dl-platform-colab/bigframes/ \
                     gs://bigframes-wheels/;
     do
-      gsutil cp -v dist/* ${gcs_path}
-      gsutil cp -v LICENSE ${gcs_path}
-      gsutil -m cp -r -v "notebooks/" ${gcs_path}notebooks/
+      gcloud storage cp --print-created-message dist/* ${gcs_path}
+      gcloud storage cp --print-created-message LICENSE ${gcs_path}
+      gcloud storage cp --recursive --print-created-message "notebooks/" ${gcs_path}notebooks/
 
     done
 

.kokoro/trampoline_v2.sh

@@ -26,8 +26,8 @@
 # To run this script, first download few files from gcs to /dev/shm.
 # (/dev/shm is passed into the container as KOKORO_GFILE_DIR).
 #
-# gsutil cp gs://cloud-devrel-kokoro-resources/python-docs-samples/secrets_viewer_service_account.json /dev/shm
-# gsutil cp gs://cloud-devrel-kokoro-resources/python-docs-samples/automl_secrets.txt /dev/shm
+# gcloud storage cp gs://cloud-devrel-kokoro-resources/python-docs-samples/secrets_viewer_service_account.json /dev/shm
+# gcloud storage cp gs://cloud-devrel-kokoro-resources/python-docs-samples/automl_secrets.txt /dev/shm
 #
 # Then run the script.
 # .kokoro/trampoline_v2.sh