Fix etcd restart and handler systemd tasks

Changed Wants=docker.service to docker.socket

Renamed handlers for reloading systemd to contain role in task name.

roles/network_plugin/weave/handlers/main.yml

@@ -2,32 +2,32 @@
 - name: restart docker
   command: /bin/true
   notify:
-    - reload systemd
-    - reload docker
+    - Weave | reload systemd
+    - Weave | reload docker
 
-- name : reload systemd
+- name : Weave | reload systemd
   shell: systemctl daemon-reload
   when: ansible_service_mgr == "systemd"
 
 - name: restart weave
   command: /bin/true
   notify:
-    - reload systemd
+    - Weave | reload systemd
     - reload weave
 
 - name: restart weaveproxy
   command: /bin/true
   notify:
-    - reload systemd
+    - Weave | reload systemd
     - reload weaveproxy
 
 - name: restart weaveexpose
   command: /bin/true
   notify:
-    - reload systemd
+    - Weave | reload systemd
     - reload weaveexpose
 
-- name: reload docker
+- name: Weave | reload docker
   service:
     name: docker
     state: restarted