ensure 'node_id' is set on all nodes

ffstatus/basestorage.py

@@ -140,6 +140,10 @@ class BaseStorage(object):
                 continue
             item = updated[itemid]
 
+            # ensure 'node_id' is set
+            if not 'node_id' in item:
+                item['node_id'] = itemid
+
             # remove node's MACs from clients list
             clients = [x for x in item.get('clients', [])]
             if 'mac' in item and item['mac'] in clients: