extras: include Fedora changes in init.d/glusterd

The changes in the .spec file from Fedora have largely been merged into
the glusterfs.spec.in. It seems that some dependencies have been missed,
most importantly some additions to the init-script that are called while
(un)installing or updating RPMs.

These changes come from the downstream Fedora package that carries its
own glusterd.init script. In future, Fedora/EPEL should be able to drop
that file and use the Gluster project version.

Change-Id: Iac25854b0c559b93fa1dd452a04663bd95ea3378
BUG: 954149
URL: http://lists.nongnu.org/archive/html/gluster-devel/2013-04/msg00077.html
CC: Fedora GlusterFS Packagers <glusterfs-owner@fedoraproject.org>
Signed-off-by: Niels de Vos <ndevos@redhat.com>
Reviewed-on: http://review.gluster.org/4864
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>
Reviewed-by: Anand Avati <avati@redhat.com>