Add openstack_node_role to ceilometer new classes

Change-Id: Id978715efabe9607ffb70f2a05a16f3048647554
diff --git a/ceilometer/server/telemetry/cluster.yml b/ceilometer/server/telemetry/cluster.yml
index d1c28ef..fdf3e03 100644
--- a/ceilometer/server/telemetry/cluster.yml
+++ b/ceilometer/server/telemetry/cluster.yml
@@ -10,6 +10,7 @@
       region: ${_param:openstack_region}
       cluster: true
       secret: ${_param:ceilometer_secret_key}
+      role: ${_param:openstack_node_role}
       ttl: 86400
       notification:
         workload_partitioning: true