* [google-cloud-cpp] Consolidate all google-cloud* packages
Starting with the v1.14.0 release all google-cloud* packages and the
googleapis package are kept in a single repository and released
simultaneously.
* Update CI baseline.
google-cloud-cpp used to inherit failures from googleapis, which
indicates these are (probably) problems in the generated protobuf/grpc
code.
* Add googleapis proto libraries port.
Compile protos from github.com/googleapis/googleapis into C++ libraries.
* Updated google-cloud-cpp to 0.12.0
* [google-cloud-cpp] Fix flaky build