Require only necessary permissions when saving backup to GCS bucket

[chtcvl]

Currently when save to GCS:

Permission denied: 403 GET https://storage.googleapis.com/storage/v1/b/bucket-name-redacted?projection=noAcl&prettyPrint=false: [email protected].
gserviceaccount.com does not have storage.buckets.get access to the Google Cloud Storage bucket., please grant `Storage Admin` to service account you used

This is caused by get_bucket() call used instead of bucket(). Latter doesn't make actual API call so its permissions are only scoped to a bucket, not to a project.

[ysde]

Hi @chtcvl
Thanks, don't know get_bucket and bucket have such difference.

Thank you !