fixup! runTestSuite: propagate --log_directory to runUnitTest

product/ERP5Type/tests/ERP5TypeTestSuite.py

@@ -23,7 +23,7 @@ class ERP5TypeTestSuite(TestSuite):
       instance_home = 'unit_test.%u' % self.instance
       args = ('--instance_home', instance_home,) + args
       if self.log_directory:
-        log_directory = os.path.join(self.log_directory, self.instance)
+        log_directory = os.path.join(self.log_directory, instance_home)
         os.mkdir(log_directory)
         args = ('--log_directory', log_directory, ) + args