Adjust k8s network definition related to Contrail refactoring.

Change-Id: I0643175cc3a73e4fd2b1454a6659df65bfcba84e
diff --git a/classes/cluster/k8s-ha-contrail/kubernetes/control.yml b/classes/cluster/k8s-ha-contrail/kubernetes/control.yml
index 098b933..de7acdc 100644
--- a/classes/cluster/k8s-ha-contrail/kubernetes/control.yml
+++ b/classes/cluster/k8s-ha-contrail/kubernetes/control.yml
@@ -59,9 +59,10 @@
           enabled: true
       network:
         engine: opencontrail
-        public_ip_range: 185.22.97.128/26
-        public_network: default-domain:default-project:Public
-        private_ip_range: 10.150.0.0/16
-        config:
-          api:
-            host: ${_param:opencontrail_control_address}
+        contrail:
+          public_ip_range: 185.22.97.128/26
+          public_network: default-domain:default-project:Public
+          private_ip_range: 10.150.0.0/16
+          config:
+            api:
+              host: ${_param:opencontrail_control_address}