Adjust k8s network definition related to Calico refactoring.

Change-Id: I51c456ae4070931ccb3f58539ef24f482000b39a
diff --git a/classes/cluster/sl-k8s-calico/kubernetes/control.yml b/classes/cluster/sl-k8s-calico/kubernetes/control.yml
index 7afdd01..94481d8 100644
--- a/classes/cluster/sl-k8s-calico/kubernetes/control.yml
+++ b/classes/cluster/sl-k8s-calico/kubernetes/control.yml
@@ -39,9 +39,10 @@
         ssl:
           enabled: true
       network:
-        etcd:
-          ssl:
-            enabled: true
+        calico:
+          etcd:
+            ssl:
+              enabled: true
       namespace:
         netchecker:
           enabled: true