[ACS41][Patch Reuqest]CLOUDSTACK-1521: Stop services after switch to BACKUP

[Sheng Yang]

commit 7602997b90232c3b11a3dfbf69e9f9cccfe898f6
Author: Sheng Yang <sheng.y...@citrix.com>
Date:   Tue Mar 5 14:25:04 2013 -0800

    CLOUDSTACK-1521: Stop services after switch to BACKUP

--Sheng