Adds Warning when NetworkManager is active on hosts

Change-Id: I1e4e20ae112936fab880b50d45686c4989ae7fbd
Fixes: rhbz#1117115
Signed-off-by: Gael Chamoulaud <gchamoul@redhat.com>
Merge "Adds Warning when NetworkManager is active on hosts"
Ensures RHOS SOS Plugins is installed on all nodes

Change-Id: I5133936f209ad7e759ff329f5b87139d83aaba9a
Fixes: rhbz#1053734
Signed-off-by: Gael Chamoulaud <gchamoul@redhat.com>