Fix flake8: Too many blank lines

(cherry picked from commit 15aee8b)

Author: seunghun1ee

magnum/tests/unit/drivers/test_template_definition.py

@@ -1111,7 +1111,6 @@ def test_k8s_get_params_insecure(self, mock_generate_csr_and_key,
         extra_subnet = mock_cluster.labels.get('extra_subnet')
         extra_security_group = mock_cluster.labels.get('extra_security_group')
 
-
         octavia_provider = mock_cluster.labels.get('octavia_provider')
         octavia_lb_algorithm = mock_cluster.labels.get('octavia_lb_algorithm')
         octavia_lb_healthcheck = mock_cluster.labels.get(