feat(ci): compile only shard-assigned packages in unit test shards - #9440

feat(ci): compile only shard-assigned packages in unit test shards#9440

quirogas merged 2 commits into

ci/shard-compile/1-workspace-test-runnergoogleapis/google-cloud-node:ci/shard-compile/1-workspace-test-runnerfrom

ci/shard-compile/2-shard-aware-compilationgoogleapis/google-cloud-node:ci/shard-compile/2-shard-aware-compilationCopy head branch name to clipboard