monitoring: Use the Servicedowntime data view in the ServiceList

refs #9009

modules/monitoring/library/Monitoring/Object/ServiceList.php

@@ -138,13 +138,13 @@ class ServiceList extends ObjectList
     /**
      * Get the scheduled downtimes
      *
-     * @return type
+     * @return \Icinga\Module\Monitoring\DataView\Servicedowntime
      */
     public function getScheduledDowntimes()
     {
-        return $this->backend->select()
-                ->from('downtime')
-                ->applyFilter(clone $this->filter)
-                ->where('downtime_objecttype', 'service');
+        return $this->backend
+            ->select()
+            ->from('servicedowntime', array('host_name', 'service_description'))
+            ->applyFilter(clone $this->filter);
     }
 }