Add ssl suport for opencontrail api service

Use ssl termination on haproxy Lb for OC 4.X version.
OC API does not support TLS natively in versions <= 4.x

Change-Id: Ic78fc33bc938b05ff390aeb0ba1a6d74227117e9
Related-PROD: PROD-29907
diff --git a/neutron/control/opencontrail/cluster.yml b/neutron/control/opencontrail/cluster.yml
index a33c273..8b09377 100644
--- a/neutron/control/opencontrail/cluster.yml
+++ b/neutron/control/opencontrail/cluster.yml
@@ -16,6 +16,7 @@
         engine: contrail
         host: ${_param:opencontrail_control_address}
         port: 8082
+        use_ssl: ${_param:opencontrail_api_ssl_enabled}
         user: ${_param:opencontrail_admin_user}
         password: ${_param:opencontrail_admin_password}
         tenant: admin