mgmt/glusterd: Allow mount/umount requests over AF_INET

Along with a simple naming convention change to avoid
confusion as per below.

   s/gd_svc_cli_prog_ro/gd_svc_cli_trusted_progs/
   s/gd_svc_cli_actors_ro/gd_svc_cli_trusted_actors/

Change-Id: Ibc73d88846636656f060a811f641f37a1a864615
BUG: 1077452
Original-Author: Vijay Bellur <vbellur@redhat.com>
Signed-off-by: Venky Shankar <vshankar@redhat.com>
Reviewed-on: http://review.gluster.org/7821
Reviewed-by: Kotresh HR <khiremat@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>