fixing flake8 error

test/test_network_service.py

@@ -77,7 +77,8 @@ class CloudNetworkServiceTestCase(ProviderTestBase):
         def create_subnet(name):
             return self.provider.networking.subnets.create(
                 network=net, cidr_block="10.0.0.1/24", name=name,
-                zone=helpers.get_provider_test_data(self.provider, 'placement'))
+                zone=helpers.get_provider_test_data(
+                    self.provider, 'placement'))
 
         def cleanup_subnet(subnet):
             self.provider.networking.subnets.delete(subnet=subnet)