From #8674.

Recent autogen changes have begun using features present only in googleapis-common-protos 1.6.0+, specifially the google.api.client package. E.g.:

$ git grep -l "google\/api\/client\.proto" | grep "\.proto$"
automl/google/cloud/automl_v1beta1/proto/prediction_service.proto
automl/google/cloud/automl_v1beta1/proto/service.proto
bigquery/google/cloud/bigquery_v2/proto/model.proto
bigquery_storage/google/cloud/bigquery_storage_v1beta1/proto/storage.proto
datacatalog/google/cloud/datacatalog_v1beta1/proto/datacatalog.proto
datalabeling/google/cloud/datalabeling_v1beta1/proto/data_labeling_service.proto
dlp/google/cloud/dlp_v2/proto/dlp.proto
irm/google/cloud/irm_v1alpha2/proto/incidents_service.proto
kms/google/cloud/kms_v1/proto/service.proto
language/google/cloud/language_v1/proto/language_service.proto
redis/google/cloud/redis_v1/proto/cloud_redis.proto
redis/google/cloud/redis_v1beta1/proto/cloud_redis.proto
talent/google/cloud/talent_v4beta1/proto/application_service.proto
talent/google/cloud/talent_v4beta1/proto/company_service.proto
talent/google/cloud/talent_v4beta1/proto/completion_service.proto
talent/google/cloud/talent_v4beta1/proto/event_service.proto
talent/google/cloud/talent_v4beta1/proto/job_service.proto
talent/google/cloud/talent_v4beta1/proto/profile_service.proto
talent/google/cloud/talent_v4beta1/proto/tenant_service.proto
translate/google/cloud/translate_v3beta1/proto/translation_service.proto
videointelligence/google/cloud/videointelligence_v1/proto/video_intelligence.proto

This "leakage" can break clients who are upgrading an existing virtualenv, because ce currently pin googleapis-common-protos >= 1.5.3, != 1.5.4, < 2.0dev in api_core/setup.py, and googleapis-common-protos >= 1.5.9, < 2.0.0dev in bigquery_storage/setup.py.

Steps to remediate:

• Update the pin of googleapis-common-protos in api_core/setup.py. (API Core / BigQuery Storage: Fix pins of 'googleapis-common-protos. #8688)
• Remove the pin of googleapis-common-protos in bigquery_storage/setup.py. (API Core / BigQuery Storage: Fix pins of 'googleapis-common-protos. #8688)
• Release a new 1.14.0 version of google-api-core. (Release api_core 1.14.0 #8700)
• Update pins of google-api-core all google-cloud-* packages to 1.14.0. (Bump minimum version for google-api-core to 1.14.0. #8709)

Bump pins of google-cloud-core >= 1.0.3, < 2.0.0dev:

• bigquery (BigQuery: Add client_options to constructors for manual clients. #8999)
• bigtable (chore: pin google-cloud-core >= 1.0.3, < 2.0.0dev. #9445)
• datastore (Datastore: Add client_options to constructors for manual clients. #9055)
• dns (chore: pin google-cloud-core >= 1.0.3, < 2.0.0dev. #9445)
• firestore (chore: pin google-cloud-core >= 1.0.3, < 2.0.0dev. #9445)
• logging (chore: pin google-cloud-core >= 1.0.3, < 2.0.0dev. #9445)
• runtimeconfig (chore: pin google-cloud-core >= 1.0.3, < 2.0.0dev. #9445)
• spanner (chore: pin google-cloud-core >= 1.0.3, < 2.0.0dev. #9445)
• storage (Storage: Add client_options to constructors for manual clients. #9054)
• trace (chore: pin google-cloud-core >= 1.0.3, < 2.0.0dev. #9445)
• translate (Translate: Add client options to translate_v2. #8737)

Release the world (as of 2019-10-10):

• Release bigquery (Release bigquery 1.19.0 #9168)
• Release datastore (chore(datastore): release 1.10.0 #9449)
• Release datalabeling (chore(datalabeling): release 0.3.0 #9443)
• Release grafeas (chore(grafeas): release 0.3.0 #9446)
• Release irm
• Release phishingprotection (chore(phishingprotection): release 0.2.0 #9452; chore(phishingprotection): release 0.2.0 #9447 was b0rked)
• Release resource_manager (chore(resource_manager): release 0.30.0 #9448)
• Release storage (chore(translate): release 1.7.0 #9421)

After merge of #9445:

• Release bigtable (chore(bigtable): release 1.1.0 #9468)
• Release dns (chore(dns): release 0.31.0 #9469)
• Release firestore (chore(firestore): release 1.5.0 #9470)
• Release logging (chore(logging): release 1.14.0 #9471)
• Release runtimeconfig (chore(runtimeconfig): release 0.30.0 #9472)
• Release spanner (chore(spanner): release 1.11.0 #9473)
• Release trace (chore(trace): release 0.23.0 #9474)

After release of google-cloud-logging:

• error_reporting: bump google-cloud-logging >= 1.14.0, < 2.0.0dev (chore(error_reporting): pin 'google-cloud-logging >= 1.14.0, < 2.0.0dev #9476)
• Release error_reporting (chore(error_reporting): release 0.33.0 #9515)