move even more code to cephlib
diff --git a/wally/fuel_rest_api.py b/wally/fuel_rest_api.py
index 8907b81..b1cfc0c 100644
--- a/wally/fuel_rest_api.py
+++ b/wally/fuel_rest_api.py
@@ -261,6 +261,7 @@
     def __getattr__(self, name: str) -> List[Node]:
         if name in self.allowed_roles:
             return [node for node in self if name in node.roles]
+        return []
 
 
 class Cluster(RestObj):