Add RBD as a known store
Add RBD as a known store

Adding RBD as a known store in the glance-api.conf file allows us to use
Ceph as a backend for Glance.

Closes-Bug: 1369578

Change-Id: I02cbafa68ca3293cedc9fef7535e79930cc4ee5c
Signed-off-by: Sébastien Han <c944cdd58d18a32bd34d661eafe66112d96c6cc1@enovance.com>

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