Define default opencontrail parameters

Change-Id: Iadb3dcbab17dc4230d3d4d4f06310ce46037a410
Related-PROD: PROD-29523 (PROD:29523)
diff --git a/defaults/openstack/init.yml b/defaults/openstack/init.yml
index d1c712d..536fe60 100644
--- a/defaults/openstack/init.yml
+++ b/defaults/openstack/init.yml
@@ -17,6 +17,7 @@
     openstack_telemetry_redis_db: '0'
     openstack_telemetry_redis_sentinel_mastername: 'master_1'
     openstack_upgrade_enabled: False
+    openstack_region: RegionOne
     # SSL
     ceilometer_agent_ssl_enabled: False
     openstack_mysql_x509_enabled: False