chore: manually regen cloudbuild do to breaking changes (#4476)

* chore: manually regen cloudbuild do to breaking changes

I had to manually manipulate the old code directory so that it
could compile. In the future this makes me question if v2 directories
make sense for generated code were we must always match the proto
spec for code to actually work.

I also include a few changes to the generator the helped me regen
and debug what was wrong.
Changes:

feat(cloudbuild/apiv1): Implementation of Build Failure Info: - Added message FailureInfo field
  PiperOrigin-RevId: 385847244
  Source-Link: googleapis/googleapis@f84d1e2

feat(cloudbuild/apiv1): add a WorkerPools API
  BREAKING CHANGE: Proto had a prior definitions of WorkerPool resources which were never supported. This change replaces those resources with definitions that are currently supported.

  Committer: @mwiczer
  PiperOrigin-RevId: 385610622
  Source-Link: googleapis/googleapis@7a1fb83

Author: codyoss