import gluster-nagios-monitoring from samples-uiplugins

  gluster-nagios-monitoring UI Plugin is imported from
  git clone git://gerrit.ovirt.org/samples-uiplugins
  Top-Commit:27ca899e2de76b3f4cd6fa2831cad868911aa4b7

Change-Id: I7716db8112532b89649e6496b007a275d50a34b8
Signed-off-by: Ramesh Nachimuthu <rnachimu@redhat.com>