Adjust k8s network definition related to Calico refactoring.

Change-Id: I51c456ae4070931ccb3f58539ef24f482000b39a
diff --git a/classes/cluster/k8s-aio-calico/kubernetes/compute.yml b/classes/cluster/k8s-aio-calico/kubernetes/compute.yml
index 9da4945..338f0e1 100644
--- a/classes/cluster/k8s-aio-calico/kubernetes/compute.yml
+++ b/classes/cluster/k8s-aio-calico/kubernetes/compute.yml
@@ -19,14 +19,13 @@
       kubelet:
         address: ${_param:single_address}
       network:
-        etcd:
-          ssl:
-            enabled: true
-        image: ${_param:kubernetes_calico_image}
-        calicoctl:
-          image: ${_param:kubernetes_calicoctl_image}
-        cni:
-          image: ${_param:kubernetes_calico_cni_image}
+        calico:
+          image: ${_param:kubernetes_calico_image}
+          calicoctl_image: ${_param:kubernetes_calico_calicoctl_image}
+          cni_image: ${_param:kubernetes_calico_cni_image}
+          etcd:
+            ssl:
+              enabled: true
     common:
       addons:
         virtlet: