The CinderBackupBackend parameter now supports 'gcs' and 's3' values,
and new parameters for configuring the associated backup backends.
The template now generates hiera config_settings for only the selected
backup backend, rather than generating hiera data for all backup
backends regardless of which one is selected.
Depends-On: I06857dd2fb64071ea734a0d3ef68ada5e5d2c077
Change-Id: I08293c7a15187b8c60f56bbc0d2d64ccf6e38227