Major update to all SL models, remove old params, renaming

Change-Id: I9d089bcdc7deee8a3ec6d8b722e440a832ef2db0
diff --git a/classes/cluster/sl_os_ovs/openstack/compute.yml b/classes/cluster/sl_os_ovs/openstack/compute.yml
index 6c5324e..337e062 100644
--- a/classes/cluster/sl_os_ovs/openstack/compute.yml
+++ b/classes/cluster/sl_os_ovs/openstack/compute.yml
@@ -4,6 +4,7 @@
 - system.linux.system.repo.saltstack.xenial
 - system.nova.compute.cluster
 - system.neutron.compute.cluster
+- system.prometheus.exporters.libvirt
 - cluster.sl_os_ovs
 parameters:
   _param: