Automatic merge from submit-queue When running inside docker, activate service account ASAP Also switching to just use `GOOGLE_APPLICATION_CREDENTIALS`, rather than both. x-ref https://github.com/kubernetes/test-infra/issues/318
Automatic merge from submit-queue When running inside docker, activate service account ASAP Also switching to just use `GOOGLE_APPLICATION_CREDENTIALS`, rather than both. x-ref https://github.com/kubernetes/test-infra/issues/318