Fix mistake in 16555 that prevented to run tests from standards locations

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@16556 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Type/tests/runUnitTest.py

@@ -214,8 +214,7 @@ def runUnitTestList(test_list):
 
   # allow unit tests of our Products or business templates to be reached.
   from glob import glob
-  product_test_list = glob(os.path.join(
-                products_home, os.sep, '*', os.sep, 'tests'))
+  product_test_list = glob(os.path.join(products_home, '*', 'tests'))
   sys.path.extend(product_test_list)
   bt5_path = os.environ.get('erp5_tests_bt5_path',
                             os.path.join(instance_home, 'bt5'))