Manila cephfsnative driver was renamed to cephfs driver and
supports both direct cephfs access or through ganesha-nfs server.
This patch deprecates the older cephfsnative class and adds
cephfs class which is compatible with current manila cephfs driver.
Change-Id: I1bf6ead3b6290ebf927bacb21e57f2897ce34605
Related-To: bp cephfs-nfs-support
Jan Provaznik