Pick up enum fixes in the GAPIC generator. (#6607)
Pick up enum fixes in the GAPIC generator. (#6607)


dhermes/gcloud-python,jonparrott/google-cloud-python,googleapis/google-cloud-python,tseaver/google-cloud-python,tswast/google-cloud-python,jonparrott/google-cloud-python,dhermes/google-cloud-python,tswast/google-cloud-python,jonparrott/gcloud-python,GoogleCloudPlatform/gcloud-python,tswast/google-cloud-python,tseaver/google-cloud-python,tseaver/google-cloud-python,dhermes/google-cloud-python,dhermes/gcloud-python,dhermes/google-cloud-python,jonparrott/gcloud-python,googleapis/google-cloud-python,GoogleCloudPlatform/gcloud-python