autotest/virt-test — pull request #792 by xiaoqing-wei (2013-08-28 05:44:42+00:00)
Title: adding Win8.1 2012r2 guest-os cfg

now uses a preview os,
need to udpate md5sum and iso path when they GA'ed

LGTM,
Acked-by: Xiaoqing Wei @xiaoqing-wei