Support changes for 2019.2.0 release

Change-Id: Ia2e00ef74198818c8f73fa6fff08c47c947e1e52
diff --git a/tcp_tests/managers/saltmanager.py b/tcp_tests/managers/saltmanager.py
index 1e1640f..c2bcc05 100644
--- a/tcp_tests/managers/saltmanager.py
+++ b/tcp_tests/managers/saltmanager.py
@@ -277,9 +277,10 @@
         # because previous authentication most probably is not valid
         # before or after time sync.
         self.__api = None
-        self.run_state(
-            tgt,
-            'cmd.run', 'service ntp stop; if [ -x /usr/sbin/ntpdate ]; then ntpdate -s ntp.ubuntu.com; else ntpd -gq ; fi; service ntp start')  # noqa
+        if not settings.SKIP_SYNC_TIME:
+            self.run_state(
+                tgt,
+                'cmd.run', 'service ntp stop; if [ -x /usr/sbin/ntpdate ]; then ntpdate -s ntp.ubuntu.com; else ntpd -gq ; fi; service ntp start')  # noqa
         new_time_res = self.run_state(tgt, 'cmd.run', 'date')
         for node_name, time in sorted(new_time_res[0]['return'][0].items()):
             LOG.info("{0}: {1}".format(node_name, time))