Change k8s network.engine to network.cnis list.

Change-Id: I43d26f79bed68e32c189f04120769427b7eccc81
diff --git a/classes/cluster/k8s-aio-contrail/kubernetes/compute.yml b/classes/cluster/k8s-aio-contrail/kubernetes/compute.yml
index 09a3d58..e8803e5 100644
--- a/classes/cluster/k8s-aio-contrail/kubernetes/compute.yml
+++ b/classes/cluster/k8s-aio-contrail/kubernetes/compute.yml
@@ -36,7 +36,8 @@
   kubernetes:
     pool:
       network:
-        engine: opencontrail
+        cnis:
+        - opencontrail
     common:
       hyperkube:
         image: ${_param:kubernetes_hyperkube_image}
diff --git a/classes/cluster/k8s-aio-contrail/kubernetes/control.yml b/classes/cluster/k8s-aio-contrail/kubernetes/control.yml
index a27712e..72a8dba 100644
--- a/classes/cluster/k8s-aio-contrail/kubernetes/control.yml
+++ b/classes/cluster/k8s-aio-contrail/kubernetes/control.yml
@@ -40,7 +40,8 @@
         netchecker:
           enabled: true
       network:
-        engine: opencontrail
+        cnis:
+        - opencontrail
         contrail:
           public_ip_range: 185.22.97.128/26
           public_network: default-domain:default-project:Public