autotest/virt-test — pull request #164 by zhouqt (2013-01-10 18:11:20+00:00)
Title: virt: Verify whether guest image is bootable

This patch adds a function in vm.verify_alive method,
to check if the image is bootable. If image can't bootup,
autotest will raise an ImageUnbootableError exception.

There are 2 parameters for this function:
* image_verify_bootable: Turn on/off this checking function.
* image_unbootable_pattern: Pattern for bootable checking.

Signed-off-by: Qingtang Zhou