Calico is not a network overlay

roles/network_plugin/tasks/main.yml

@@ -0,0 +1,13 @@
+---
+- name: "Test if network plugin is defined"
+  fail: msg="ERROR, One network_plugin variable must be defined (Flannel or Calico)"
+  when: ( kube_network_plugin is defined and kube_network_plugin == "calico" and kube_network_plugin == "flannel" ) or
+        kube_network_plugin is not defined 
+
+- include: flannel.yml
+  when: kube_network_plugin == "flannel"
+- include: calico.yml
+  when: kube_network_plugin == "calico"
+
+- meta: flush_handlers
+