ceph: add pacific release name
ceph: add pacific release name

When the version is detected it will print the name of the release
Pacific correctly where previously it was showing <unknown version>".

Signed-off-by: Sébastien Han <62d754cc350e84d3b1c32ae79f976f5348e74a40@redhat.com>

rook/rook,rook/rook,rook/nfs,rook/rook,rook/nfs,rook/rook,rook/nfs,rook/rook