Purpose of GcpApiSurfaceTest in google-cloud-platform SDK

Hi folks, I'm working on adding support for a new API to the google-cloud-platform SDK, and some of my changes have caused the API surface test to start

Please add me as a contributor

Hi, I have a small bugfix that I'd like to contribute (tracked by https://issues.apache.org/jira/browse/BEAM-4263). Can a PMC member add me as a contributor? Thanks Ken