Change k8s network.engine to network.cnis list.

Change-Id: I43d26f79bed68e32c189f04120769427b7eccc81
diff --git a/classes/cluster/k8s-ha-contrail/kubernetes/compute.yml b/classes/cluster/k8s-ha-contrail/kubernetes/compute.yml
index 213ee65..3f5af94 100644
--- a/classes/cluster/k8s-ha-contrail/kubernetes/compute.yml
+++ b/classes/cluster/k8s-ha-contrail/kubernetes/compute.yml
@@ -38,7 +38,8 @@
         address: ${_param:single_address}
         fail_on_swap: ${_param:kubelet_fail_on_swap}
       network:
-        engine: opencontrail
+        cnis:
+        - opencontrail
         contrail:
           config:
             api: