Comment 12 for bug 1231254

In my environment (icehouse 2014.1.2) use the following can work well

# glance image-update 18ff395d-668a-40cf-ba89-6a3ba47a2a55 --property os_type='windows'

# nova --debug boot --flavor 10001 --block-device id=18ff395d-668a-40cf-ba89-6a3ba47a2a55,source=image,dest=volume,device=vda,size=1,bootindex=0,shutdown=remove --nic net-id=cdf34f23-6b9a-4e53-9dbb-16270e483b30 --meta os_type=windows ot-t1

# virsh dumpxml eeefe8b8-1ad6-4b75-aa7b-9412a9f3e3a1 | grep clock
  <clock offset='localtime'/>