Change k8s network.engine to network.cnis list.

Change-Id: I43d26f79bed68e32c189f04120769427b7eccc81
diff --git a/classes/cluster/virtual-mcp11-k8s-calico-minimal/kubernetes/control.yml b/classes/cluster/virtual-mcp11-k8s-calico-minimal/kubernetes/control.yml
index ed10270..1640fb7 100644
--- a/classes/cluster/virtual-mcp11-k8s-calico-minimal/kubernetes/control.yml
+++ b/classes/cluster/virtual-mcp11-k8s-calico-minimal/kubernetes/control.yml
@@ -45,6 +45,8 @@
         ssl:
           enabled: true
       network:
+        cnis:
+        - calico
         calico:
           etcd:
             ssl: