Fix flake8 warnings

Change-Id: I1c1d65f5585833a9db9d1313933dc205b5890e08
diff --git a/tcp_tests/tests/system/test_failover_k8s.py b/tcp_tests/tests/system/test_failover_k8s.py
index 60ac4a7..850cfd1 100644
--- a/tcp_tests/tests/system/test_failover_k8s.py
+++ b/tcp_tests/tests/system/test_failover_k8s.py
@@ -57,9 +57,9 @@
             new_minion_vip =\
                 core_actions.get_keepalived_vip_minion_id(vip)
         except Exception:
-                time.sleep(15)
-                new_minion_vip = \
-                    core_actions.get_keepalived_vip_minion_id(vip)
+            time.sleep(15)
+            new_minion_vip = \
+                core_actions.get_keepalived_vip_minion_id(vip)
         LOG.info("VIP {0} migrated to {1}".format(vip, new_minion_vip))
         assert new_minion_vip != minion_vip