ctdb-packaging: Move RPM spec file to examples directory

We used to use this for building test packages for standalone CTDB.
However, our testing has now changed to use binary tarballs.  We
believe we were the only users of this spec file and expect CTDB to
only be installed as part of a top-level Samba build, especially in
RPM form.

Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>

diff --git a/ctdb/packaging/RPM/ctdb.spec.in b/ctdb/doc/examples/ctdb.spec.in
similarity index 100%
rename from ctdb/packaging/RPM/ctdb.spec.in
rename to ctdb/doc/examples/ctdb.spec.in