Add nova:compute:networking:contrail pillar to contrail labs

Change-Id: Icb364ff914c595c65a555496249f92335fbc0abe
diff --git a/classes/cluster/os-ha-contrail/openstack/compute.yml b/classes/cluster/os-ha-contrail/openstack/compute.yml
index 1d2b5e0..0467c74 100755
--- a/classes/cluster/os-ha-contrail/openstack/compute.yml
+++ b/classes/cluster/os-ha-contrail/openstack/compute.yml
@@ -68,6 +68,7 @@
         topics: "notifications"
         notify_on:
           state_change: vm_and_task_state
+      networking: contrail
   opencontrail:
     common:
       network: