Change k8s network definitions structure.

Change-Id: Ibb460339e4f059efc1da7df587cad5f79a206068
diff --git a/classes/cluster/virtual-mcp11-k8s-calico/kubernetes/compute.yml b/classes/cluster/virtual-mcp11-k8s-calico/kubernetes/compute.yml
index 4408379..27395f0 100644
--- a/classes/cluster/virtual-mcp11-k8s-calico/kubernetes/compute.yml
+++ b/classes/cluster/virtual-mcp11-k8s-calico/kubernetes/compute.yml
@@ -15,9 +15,8 @@
       kubelet:
         fail_on_swap: ${_param:kubelet_fail_on_swap}
       network:
-        cnis:
-        - calico
         calico:
+          enabled: true
           image: ${_param:kubernetes_calico_image}
           calicoctl_image: ${_param:kubernetes_calico_calicoctl_image}
           cni_image: ${_param:kubernetes_calico_cni_image}