Adjust k8s network definition related to Calico refactoring.

Change-Id: I51c456ae4070931ccb3f58539ef24f482000b39a
diff --git a/classes/cluster/k8s-aio-calico/kubernetes/control.yml b/classes/cluster/k8s-aio-calico/kubernetes/control.yml
index a26ab0a..b14ecf9 100644
--- a/classes/cluster/k8s-aio-calico/kubernetes/control.yml
+++ b/classes/cluster/k8s-aio-calico/kubernetes/control.yml
@@ -51,9 +51,10 @@
       kubelet:
         address: ${_param:single_address}
       network:
-        etcd:
-          ssl:
-            enabled: true
+        calico:
+          etcd:
+            ssl:
+              enabled: true
       namespace:
         netchecker:
           enabled: true