[sheepdog] [PATCH v2] tools/zk_control: add sort options for list subcommand

[Liu Yuan]

On Thu, Mar 05, 2015 at 01:47:28PM +0800, Meng Lingkun wrote:
> From: Meng Lingkun <menglingkun at cmss.chinamobile.com>
> 
> It's more useable to list the sequential znodes in queue with sort function.
> And we always focus on the lastest zndode in queue, so sort in reverse order.
> 

Applied after I reversed the list order.

Yuan