Add support of ssl for OpenContrail API

Change-Id: Ia7a15d32011200060fb80717aea1d5feeaa01516
Related-PROD: PROD-29907
diff --git a/metadata/service/client/single.yml b/metadata/service/client/single.yml
index 2e14591..c1dfd35 100644
--- a/metadata/service/client/single.yml
+++ b/metadata/service/client/single.yml
@@ -8,6 +8,7 @@
     opencontrail_identity_version: '2.0'
     opencontrail_admin_password: 'none'
     opencontrail_admin_user: 'contrail'
+    opencontrail_api_ssl_enabled: False
   opencontrail:
     client:
       enabled: True
@@ -25,3 +26,7 @@
         engine: contrail
         host: ${_param:cluster_local_address}
         port: 8082
+        use_ssl: ${_param:opencontrail_api_ssl_enabled}
+        certfile: ${_param:opencontrail_api_certfile}
+        keyfile: ${_param:opencontrail_api_keyfile}
+        cafile: ${_param:opencontrail_api_cafile}