CBQE-2406 fix rza couchbase-cli for windows

Change-Id: Icc502c4d14571bb7c908ca8576c40cbb006f9db1
Reviewed-on: http://review.couchbase.org/41250
Reviewed-by: Thuan Nguyen <soccon@gmail.com>
Tested-by: Thuan Nguyen <soccon@gmail.com>