Mark as xfail next flaky (in 2019.2.3 cvp-sanity-tests image)  tests to unblock per-commit testing:
test_k8s_get_nodes_status
test_ntp_sync

Change-Id: I3b31b99eb04409bf43bc4532597714d4b6daa518
related-Task: #PROD-28984(PROD:28984)
diff --git a/cvp-sanity/cvp_checks/tests/test_k8s.py b/cvp-sanity/cvp_checks/tests/test_k8s.py
index 022eb1c..ebfbfe3 100644
--- a/cvp-sanity/cvp_checks/tests/test_k8s.py
+++ b/cvp-sanity/cvp_checks/tests/test_k8s.py
@@ -26,6 +26,7 @@
                                                        indent=4))
 
 
+@pytest.mark.xfail
 def test_k8s_get_nodes_status(local_salt_client):
     result = local_salt_client.cmd(
         'etcd:server', 'cmd.run',
diff --git a/cvp-sanity/cvp_checks/tests/test_ntp_sync.py b/cvp-sanity/cvp_checks/tests/test_ntp_sync.py
index 5c9c173..be0f411 100644
--- a/cvp-sanity/cvp_checks/tests/test_ntp_sync.py
+++ b/cvp-sanity/cvp_checks/tests/test_ntp_sync.py
@@ -1,7 +1,8 @@
 from cvp_checks import utils
 import json
+import pytest
 
-
+@pytest.mark.xfail
 def test_ntp_sync(local_salt_client):
     """Test checks that system time is the same across all nodes"""