py3: StandardError does not exist.

product/ERP5Type/tests/ERP5TypeTestCase.py

@@ -40,6 +40,8 @@ except ImportError:
   from types import FunctionType as function
 from zope.globalrequest import getRequest
 import six
+if six.PY3:
+  StandardError = Exception
 original_get_request = function(getRequest.__code__, getRequest.__globals__)
 
 from Testing.ZopeTestCase.connections import registry