Add cleanUp method into integration tests

I think that can be useful to have cleanUp method in BaseTestCase [1]. Purpose of this method is remove all allocated resources (created users, images, etc.) at the end of scenario - like it's done in Tempest [2].

What do you think that is a good idea/suitable to implement cleanup method into integration tests?

examle (pseudopython):
def test_create_update_user(self):
    goto_admin_panel()

    username = random_str('user-')

    create_user(username)
    self.cleanUp(delete_user, username)

    update_user(username)

[1] https://github.com/openstack/horizon/blob/master/openstack_dashboard/test/integration_tests/helpers.py
[2] http://docs.openstack.org/developer/tempest/HACKING.html#test-fixtures-and-resources