Configure calico pool on an etcd server

roles/network_plugin/tasks/calico.yml

@@ -14,6 +14,7 @@
   environment:
      ETCD_AUTHORITY: "{{ groups['etcd'][0] }}:2379"
   run_once: true
+  delegate_to: "{{ groups['etcd'][0] }}"
 
 - name: Calico | Write calico-node systemd init file
   template: src=calico/calico-node.service.j2 dest=/etc/systemd/system/calico-node.service