Bumps google-cloud-storage from 1.20.0 to 1.21.0.

Sourced from google-cloud-storage's releases.

google-cloud-bigquery 1.21.0

10-16-2019 10:33 PDT

New Features

• add ability to pass in a table ID instead of a query to the %%bigquery magic (#9170)
• add support for custom QueryJobConfig in BigQuery.cursor.execute method (#9278)
• store QueryJob to destination var on error in %%bigquery magic (#9245)
• add script statistics to job resource (#9428)
• add support for sheets ranges (#9416)
• add support for listing jobs by parent job (#9225)
• expose customer managed encryption key for ML models (#9302)
• add Dataset.default_partition_expiration_ms and Table.require_partition_filter properties (#9464)

Dependencies

• restrict version range of google-resumable-media (#9243)

Documentation

• document how to load data as JSON string (#9231)
• standardize comments and formatting in existing code samples (#9212)
• rewrite docstrings in Google style (#9326)
• fix incorrect links to REST API in reference docs (#9436)

Internal / Testing Changes

• add code samples to lint check (#9277)
• update code samples to use strings for table and dataset IDs (#9136)
• simplify scripting system test to reduce flakiness (#9458)

google-cloud-storage 1.21.0

10-28-2019 21:52 PDT

Implementation Changes

• Add gcloud-python header to user agent (#9551)
• Don't report a gapic version for storage (#9549)
• Update storage endpoint from www.googleapis.com to storage.googleapis.com (#9543)
• Call anonymous client method to remove dependency of google application credentials (#9455)
• Enable CSEK w/ V4 signed URLs (#9450)

New Features

• Support predefined ACLs in Bucket.create (#9334)

Documentation

• Add hmac_key and notification documentation rst files (#9529)
• Remove references to the old authentication credentials (#9456)
• Clarify docstring for Blob.download_as_string (#9332)

• 3614e5f chore(storage): release 1.21.0 (#9553)
• 025867a fix: add gcloud-python header to user agent (#9551)
• de3abdf fix(scheduler)!: remove project_path method, update docstrings (via synth) ...
• 9fd07ec fix(videointelligence): make features a positional parameter in `annotate_v...
• 604f32d fix: don't report a gapic version for storage (#9549)
• 9e5ca9a fix(automl): pass credentials to underlying clients in TableClient (#9491)
• 8e7e89c doc(bigquery): add code sample for scripting (#9537)
• 73a07d4 refactor(bigquery): rewrite docs in Google style, part 2 (#9481)
• 764251d fix(storage): update storage endpoint from www.googleapis.com to storage.goog...
• 14e140c feat(oslogin)!: rename fingerprint_path to ssh_public_key_path; rename `p...
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