Ensures RHOS SOS Plugins is installed on all nodes

Change-Id: I5133936f209ad7e759ff329f5b87139d83aaba9a
Fixes: rhbz#1053734
Signed-off-by: Gael Chamoulaud <gchamoul@redhat.com>
(cherry picked from commit 0d5836afe088100cdeb99212d831d65c23b2fd14)
Merge "Ensures RHOS SOS Plugins is installed on all nodes" into icehouse