IcingaObjects: add missing relations

library/Director/Objects/IcingaTimePeriod.php

@@ -22,6 +22,10 @@ class IcingaTimePeriod extends IcingaObject
 
     protected $supportsRanges = true;
 
+    protected $relations = array(
+        'zone' => 'IcingaZone',
+    );
+
     /**
      * Render update property
      *

library/Director/Objects/IcingaUser.php

@@ -35,4 +35,9 @@ class IcingaUser extends IcingaObject
         'states' => 'StateFilterSet',
         'types'  => 'TypeFilterSet',
     );
+
+    protected $relations = array(
+        'period' => 'IcingaTimePeriod',
+        'zone'   => 'IcingaZone',
+    );
 }