ceph: correct component in mirroring yaml
ceph: correct component in mirroring yaml

corrected the component in mirroring yaml and added
appropriate mirroring related affinity example.

Signed-off-by: Madhu Rajanna <60fbf37a92c2a0908e31296d18dadbec5a4dae17@gmail.com>

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