Add service manage variables

It is possible that a user will not want the roles to control the
service settings. For example, if a service dies and you don't want to
auto restart it.

Change-Id: I1d99a712984a71f41533cadda317c13f03b9f779
Signed-off-by: Paul Belanger <pabelanger@redhat.com>

defaults/main.yaml

@@ -74,9 +74,11 @@ zuul_file_zuul_server_service_group: root
 zuul_file_zuul_server_service_owner: root
 
 zuul_service_zuul_merger_enabled: yes
+zuul_service_zuul_merger_manage: true
 zuul_service_zuul_merger_name: zuul-merger
 zuul_service_zuul_merger_state: started
 
 zuul_service_zuul_server_enabled: yes
+zuul_service_zuul_server_manage: true
 zuul_service_zuul_server_name: zuul-server
 zuul_service_zuul_server_state: started

handlers/main.yaml

@@ -17,11 +17,15 @@
   service:
     name: zuul-merger
     state: reloaded
-  when: zuul_service_zuul_merger_state == "started" and not __zuul_merger_service.changed
+  when: zuul_service_zuul_merger_manage and
+        zuul_service_zuul_merger_state == "started" and not
+        __zuul_merger_service.changed
 
 - name: Reload zuul-server
   become: yes
   service:
     name: zuul-server
     state: reloaded
-  when: zuul_service_zuul_server_state == "started" and not __zuul_server_service.changed
+  when: zuul_service_zuul_server_manage and
+        zuul_service_zuul_server_state == "started" and not
+        __zuul_server_service.changed

tasks/service.yaml

@@ -87,6 +87,7 @@
     name: "{{ zuul_service_zuul_merger_name }}"
     state: "{{ zuul_service_zuul_merger_state }}"
   register: __zuul_merger_service
+  when: zuul_service_zuul_merger_manage
 
 - name: Enable zuul-server service.
   service:
@@ -94,3 +95,4 @@
     name: "{{ zuul_service_zuul_server_name }}"
     state: "{{ zuul_service_zuul_server_state }}"
   register: __zuul_server_service
+  when: zuul_service_zuul_server_manage