Mark old storage classes as legacy, not deprecated. (#8887)
Mark old storage classes as legacy, not deprecated. (#8887)


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