Fix mismatched properties for checking grpc exceptions

Author: odeke-em

tests/mockserver_tests/mock_server_test_base.py

@@ -61,7 +61,7 @@ def aborted_status() -> _Status:
 def unavailable_status() -> _Status:
     error = status_pb2.Status(
         code=code_pb2.UNAVAILABLE,
-        message="Received unexpected EOS on DATA frame from server",
+        message="Service unavailable.",
     )
     retry_info = RetryInfo(retry_delay=Duration(seconds=0, nanos=1))
     status = _Status(
@@ -78,22 +78,17 @@ def unavailable_status() -> _Status:
     return status
 
 
-# Creates an INTERNAL status with the smallest possible retry delay.
+# Creates an INTERNAL status.
 def internal_status() -> _Status:
     error = status_pb2.Status(
         code=code_pb2.INTERNAL,
-        message="Service unavailable.",
+        message="Received unexpected EOS on DATA frame from server",
     )
-    retry_info = RetryInfo(retry_delay=Duration(seconds=0, nanos=1))
     status = _Status(
         code=code_to_grpc_status_code(error.code),
         details=error.message,
         trailing_metadata=(
             ("grpc-status-details-bin", error.SerializeToString()),
-            (
-                "google.rpc.retryinfo-bin",
-                retry_info.SerializeToString(),
-            ),
         ),
     )
     return status