rpm: Include ceph.spec in release tarball.
rpm: Include ceph.spec in release tarball.

This lets users say "rpmbuild -ta ceph-XXX.tgz".

Closes: #1521
Signed-off-by: Tommi Virtanen <9ab2264cc7e4806727ef3fc8f99e05b759bbf6e0@dreamhost.com>

ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph