Add openstack_node_role parameter

Add openstack_node_role parameter that will specify node role
primary|secondary. This metadata will be used by formulas as a
trigger to run one-shot operations.

Change-Id: I230590bc5f9d53960c6edaf7e37c44541d9c3342
Related-Prod: PROD-21267
diff --git a/neutron/control/cluster.yml b/neutron/control/cluster.yml
index 166de3a..703f196 100644
--- a/neutron/control/cluster.yml
+++ b/neutron/control/cluster.yml
@@ -37,6 +37,7 @@
             params: check inter 10s fastinter 2s downinter 3s rise 3 fall 3
   neutron:
     server:
+      role: ${_param:openstack_node_role}
       plugin: contrail
     identity:
       protocol: ${_param:cluster_internal_protocol}