[rubygems/rubygems] Extracting sign_s3_url & s3_source_auth into a separate S3URISigner class
https://github.com/rubygems/rubygems/commit/c30d21ec7a
[rubygems/rubygems] Extracting sign_s3_url & s3_source_auth into a separate S3URISigner class
https://github.com/rubygems/rubygems/commit/c30d21ec7a