correct onosDie() to use the onos-die command rather than onos-kill

Change-Id: Ic1cbfebe9cb190cac29930b9d917f2809f3a2eeb
diff --git a/TestON/drivers/common/cli/onosdriver.py b/TestON/drivers/common/cli/onosdriver.py
index 9dee93e..7dbf023 100644
--- a/TestON/drivers/common/cli/onosdriver.py
+++ b/TestON/drivers/common/cli/onosdriver.py
@@ -1106,7 +1106,7 @@
         try:
             self.handle.sendline( "" )
             self.handle.expect( "\$" )
-            cmdStr = "onos-kill " + str( nodeIp )
+            cmdStr = "onos-die " + str( nodeIp )
             self.handle.sendline( cmdStr )
             i = self.handle.expect( [
                 "Killing\sONOS",