Calico is not a network overlay

roles/network_plugin/templates/calico/network-environment.j2

@@ -0,0 +1,19 @@
+#! /usr/bin/bash
+# This node's IPv4 address
+CALICO_IPAM=true
+DEFAULT_IPV4={{ ansible_default_ipv4.address }}
+
+{% if inventory_hostname in groups['kube-node'] %}
+# The kubernetes master IP
+KUBERNETES_MASTER={{ groups['kube-master'][0] }}
+
+# Location of etcd cluster used by Calico.  By default, this uses the etcd
+# instance running on the Kubernetes Master
+ETCD_AUTHORITY={{ groups['kube-master'][0] }}:4001
+
+# The kubernetes-apiserver location - used by the calico plugin
+KUBE_API_ROOT=http://{{ groups['kube-master'][0] }}:8080/api/v1/
+
+# Location of the calicoctl binary - used by the calico plugin
+CALICOCTL_PATH="{{ bin_dir }}/calicoctl"
+{% endif %}