NotificationQuery: Provide case-insensitive filter column `service'

refs #8613

modules/monitoring/library/Monitoring/Backend/Ido/Query/NotificationQuery.php

@@ -15,6 +15,7 @@ class NotificationQuery extends IdoQuery
         'objects' => array(
             'host'                          => 'o.name1 COLLATE latin1_general_ci',
             'host_name'                     => 'o.name1',
+            'service'                       => 'o.name2 COLLATE latin1_general_ci',
             'service_description'           => 'o.name2'
         ),
         'contact' => array(

modules/monitoring/library/Monitoring/DataView/Notification.php

@@ -37,6 +37,6 @@ class Notification extends DataView
 
     public function getFilterColumns()
     {
-        return array('host');
+        return array('host', 'service');
     }
 }