Mark k8s system tests with k8s_system mark

Change-Id: I0a1cb7e30648bdf9fd4f89c62fe08661b28c0117
Related-PROD: PROD-28588
diff --git a/tcp_tests/tests/system/test_failover_k8s.py b/tcp_tests/tests/system/test_failover_k8s.py
index 7382bb9..60ac4a7 100644
--- a/tcp_tests/tests/system/test_failover_k8s.py
+++ b/tcp_tests/tests/system/test_failover_k8s.py
@@ -23,6 +23,7 @@
 
     @pytest.mark.grab_versions
     @pytest.mark.fail_snapshot
+    @pytest.mark.k8s_system
     def test_k8s_master_vip_migration(self, show_step, k8s_deployed, underlay,
                                       k8s_actions, core_actions,
                                       config, hardware):