Merge pull request #2154 from tdihp/proxy-conf-restart-docker

Restart docker when http-proxy.conf changed.

roles/docker/tasks/systemd.yml

@@ -8,6 +8,7 @@
   template:
     src: http-proxy.conf.j2
     dest: /etc/systemd/system/docker.service.d/http-proxy.conf
+  notify: restart docker
   when: http_proxy is defined or https_proxy is defined
 
 - name: get systemd version