add missing class in inheritance in order to make report tests work

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@42187 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/tests/testPayroll.py

@@ -35,7 +35,7 @@ from DateTime import DateTime
 import transaction
 from Products.ERP5Type.tests.utils import createZODBPythonScript
 
-class TestPayrollMixin(TestTradeModelLineMixin):
+class TestPayrollMixin(TestTradeModelLineMixin, ERP5ReportTestCase):
   BUSINESS_PATH_CREATION_SEQUENCE_STRING = """
                CreateBusinessProcess
                CreateBusinessLink