'Test the Forbidden Exception is Controlled.
Test, through the \'list_images\' method, that a \'403 Forbidden\'
raises an \'ForbidenError\' instead of the \'MalformedUrlException\''

def test_forbidden_controlled(self):

    AbiquoNodeDriver.connectionCls.conn_class = AbiquoMockHttp
    conn = AbiquoNodeDriver('son', 'gohan', 'http://dummy.host.com/api')
    self.assertRaises(ForbiddenError, conn.list_images)
