Add service_set_id is null condition to objects in ServiceTemplateU…

…sageTable.php

For number of objects in ServiceTemplateUsageTable and objects in ObjectsTable to be consistent
`service_set_id is null` condition is added to objects in getTypeSummaryDefinitions() in ServiceTemplateUsageTable.php.

library/Director/Web/Table/ServiceTemplateUsageTable.php

@@ -18,7 +18,7 @@ protected function getTypeSummaryDefinitions()
     {
         return [
             'templates'  => $this->getSummaryLine('template'),
-            'objects'    => $this->getSummaryLine('object'),
+            'objects'    => $this->getSummaryLine('object', 'o.service_set_id IS NULL'),
             'applyrules' => $this->getSummaryLine('apply', 'o.service_set_id IS NULL'),
             // TODO: re-enable
             // 'setmembers' => $this->getSummaryLine('apply', 'o.service_set_id IS NOT NULL'),