Unbreak gomock() in combination with remote builds (#3)
Unbreak gomock() in combination with remote builds (#3)

Add missing dependencies on the Go SDK and source code.

This unbreaks the build of mock files when doing builds against a Bazel
Buildbarn cluster. We need to have the proper SDK tools and stdlib
source code present for mock generation to work.

jmhodges/bazel_gomock,jmhodges/bazel_gomock