---
features:
  - |
    Add CinderStorageAvailabilityZone parameter that configures
    cinder's DEFAULT/storage_availability_zone. The default value
    of 'nova' matches cinder's own default value.

    Add several CinderXXXAvailabilityZone parameters, where XXX is
    any of the cinder volume service's storage backends. The
    parameters are optional, and when set they override the
    "backend_availability_zone" for the corresponding backend.