Plugin timesync_status: add support for 'fetch' command

Author: droscy

plugins/systemd/timesync_status

@@ -132,7 +132,7 @@ def config():
 
 
 if __name__ == '__main__':
-    if len(sys.argv) == 1:
+    if len(sys.argv) == 1 or sys.argv[1] == 'fetch':
         retrieve()
     elif sys.argv[1] == 'config':
         config()