Set notifications option for Nova

It was found that notifications for vm state change are generated
by nova-conductor so we need also set this option on controllers.

Change-Id: I997a50fd17dfd8b9442c84e9b592088524ec5ec6
Related-Prod: https://mirantis.jira.com/browse/PROD-17879
diff --git a/classes/cluster/virtual-mcp-pike-ovs/openstack/control.yml b/classes/cluster/virtual-mcp-pike-ovs/openstack/control.yml
index 4ab6709..6402bb9 100644
--- a/classes/cluster/virtual-mcp-pike-ovs/openstack/control.yml
+++ b/classes/cluster/virtual-mcp-pike-ovs/openstack/control.yml
@@ -136,6 +136,9 @@
         novncproxy_port: 6080
       vncproxy_url: http://${_param:cluster_vip_address}:6080
       workers: 1
+      notification:
+        notify_on:
+          state_change: vm_and_task_state
   manila:
     common:
       default_share_type: default