Reload service files on Nova services restart

During an upgrade new service files are added, but systemd is not
reloaded during restart of nova services to pick up these file
changes. This performs a daemon-reload when restarting nova
services.

Change-Id: I98b3f66429ee045f052ad491847cf82d2f5d4efc
Closes-Bug: #1673889

handlers/main.yml

@@ -30,6 +30,7 @@
   systemd:
     name: "{{ nova_services['nova-conductor']['service_name'] }}"
     state: "restarted"
+    daemon_reload: yes
   register: nova_conductor_restart
   when:
     - "{{ nova_services['nova-conductor']['group'] in group_names }}"
@@ -39,6 +40,7 @@
   systemd:
     name: "{{ nova_services['nova-api-os-compute']['service_name'] }}"
     state: "restarted"
+    daemon_reload: yes
   register: nova_api_restart
   when:
     - "{{ nova_services['nova-api-os-compute']['group'] in group_names }}"
@@ -49,6 +51,7 @@
   systemd:
     name: "{{ nova_services[item]['service_name'] }}"
     state: "restarted"
+    daemon_reload: yes
   register: nova_misc_restart
   with_items:
     - nova-api-metadata
@@ -65,6 +68,7 @@
   systemd:
     name: "{{ nova_services['nova-compute']['service_name'] }}"
     state: "restarted"
+    daemon_reload: yes
   register: nova_compute_restart
   when:
     - "{{ nova_services['nova-compute']['group'] in group_names }}"