Add primary role for control nodes to contrail labs

Change-Id: I782533d256fa52e8c733d1da92357d9f363a6623
diff --git a/classes/cluster/os-ha-contrail/openstack/control_init.yml b/classes/cluster/os-ha-contrail/openstack/control_init.yml
new file mode 100644
index 0000000..149efdd
--- /dev/null
+++ b/classes/cluster/os-ha-contrail/openstack/control_init.yml
@@ -0,0 +1,5 @@
+parameters:
+  neutron:
+    server:
+      role:
+        primary: True