autotest/virt-test — pull request #1538 by morecache (2014-03-25 07:10:15+00:00)
Title: Add prompt information of rescue mode to patterns

Some of testcases, say boot_time.py of tp-qemu, will call grubby to modify grub to come
into rescue mode. So add RedHat & SUSE login prompt info of rescue mode in patterns,
Let test script knows when it 'type in' the password.

Signed-off-by: Lin Ma