NEX-3974 Remove timing issues so the robot can run consistently
Reviewed by: Steve Peng <steve.peng@nexenta.com>
Reviewed by: Josef Sipek <josef.sipek@nexenta.com>
Reviewed by: Alek Pinchuk <alek.pinchuk@nexenta.com>

@@ -25,10 +25,11 @@
 # Use is subject to license terms.
 #
 
 #
 # Copyright (c) 2012, 2017 by Delphix. All rights reserved.
+# Copyright 2015 Nexenta Systems, Inc.  All rights reserved.
 #
 
 . $STF_SUITE/include/libtest.shlib
 . $STF_SUITE/tests/functional/cli_root/zpool_upgrade/zpool_upgrade.kshlib