disable hdparm test for virtio-scsi disk

hdparm can't read sensor data from virtio-scsi disk, so disable it;

Signed-off-by: Xu Tian <xutian@redhat.com>
qemu.tests: disable lsi device on Host_RHEL6.5 and Host_RHEL7.0

since lsi device is not support by RHEL6.5 and RHEL.7.0 host, so disable
it; And disable virtio-scsi on WinXP and Win2003 guest too;

Signed-off-by: Xu Tian <xutian@redhat.com>
virttest: fix save_to_file time when use qmp monitor

If vm used qmp monitor info migrate command will return a object, then
 check migrated complete will always timeout.Used regular expression to
check command output and raise TestFail if check migrated timeout;

Signed-off-by: Xu Tian <xutian@redhat.com>