add missing fake method

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@27584 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Type/Tool/MemcachedTool.py

@@ -341,5 +341,6 @@ else:
         ' server administrator to enable it by installing python-memcached.'
 
     manage_beforeDelete = failingMethod
+    manage_afterAdd = failingMethod
     memcached_tool_configure = failingMethod
     getMemcachedDict = failingMethod