Corrected building of hierarch for arent circuits

inventory_provider/tasks/worker.py

@@ -164,7 +164,7 @@ def update_circuit_hierarchy():
         r = get_redis(InventoryTask.config)
         for key in r.scan_iter('opsdb:services:parents:*'):
             r.delete(key)
-        for cid, parents in child_to_parents.items():
+        for cid, parents in parent_to_children.items():
             r.set('opsdb:services:parents:%d' % cid, json.dumps(parents))
 
         for key in r.scan_iter('opsdb:services:children:*'):