Fixed openvswitch not upgrading.

Problem was a missing restart as systemd file did not change, so no
notification was triggered. Added a notification on a file that
contains the image version which does change.

This exposed a bug where openvswitch shuts down the node and you return
to no functioning nodes. Fixed by reordering the handlers so openvswitch
restarts first.

roles/openshift_node/handlers/main.yml

@@ -1,8 +1,9 @@
 ---
+- name: restart openvswitch
+  service: name=openvswitch state=restarted
+  when: not (ovs_service_status_changed | default(false) | bool)
+
 - name: restart node
   service: name={{ openshift.common.service_type }}-node state=restarted
   when: not (node_service_status_changed | default(false) | bool)
 
-- name: restart openvswitch
-  service: name=openvswitch state=restarted
-  when: not (ovs_service_status_changed | default(false) | bool)

roles/openshift_node/tasks/systemd_units.yml

@@ -14,6 +14,8 @@
     dest: /etc/sysconfig/openvswitch
   when: openshift.common.is_containerized | bool
   register: install_ovs_sysconfig
+  notify:
+  - restart openvswitch
 
 - name: Install OpenvSwitch docker service file
   template: