We should ship the RBD udev rules in the same package that ships
/usr/bin/rbd. This package happens to be ceph-common, so move the udev
rules there.
The udev rules rely on the ceph-rbdnamer utility, so move that utility
and its man page as well.
http://tracker.ceph.com/issues/10864 Refs: #10864
Signed-off-by: Ken Dreyer <kdreyer@redhat.com>