According to new policy,all RHEL host will use the latest virtio-win drivers.
And latest virtio-win serial driver use "VirtIO Serial Driver".
Signed-off-by: NYanan Fu <yfu@redhat.com>

Signed-off-by: NYanan Fu <yfu@redhat.com>

1. fix typo in single_driver_install.cfg.
2. add q35 configurations in boot_order_check.cfg.
Signed-off-by: NCong Li <coli@redhat.com>

1. Win2008r2 is missing of param "guest_alias".
2. Fix the error of Win2008 guest_name.
3. Add Win2016 guest.
Signed-off-by: NCong Li <coli@redhat.com>

Signed-off-by: NCong Li <coli@redhat.com>

Signed-off-by: NCong Li <coli@redhat.com>

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

do a workaround to avoid chaning system disk driver between virtio_blk and virtio_scsi, which will cause BSOD "INACCESSABLE_DEVICE" for lastest windows guests.
Signed-off-by: NCong Li <coli@redhat.com>

1. force create image for block testing.
2. ignore errors in get_installation_logs in finally part,
   which will blocks real failed reason.
3. no need compare current driver version as expected
   if driver is uninstalled.
Signed-off-by: NCong Li <coli@redhat.com>

1. Remove scenarios "downgrade" and "uninstall".
This case won't upgrade / install driver after
 downgrade / uninstall, which is not acceptable.
Will write new case to cover those scenarios.
2. rename variant "uninstall".
3. remove some unreasonable cfg.
Signed-off-by: NCong Li <coli@redhat.com>

1. fix a syntax error.
The end double quote of variant "guest_alias" will be
analyzed as a string \" in raw string.
2. Update the path of driver virtio serial.
Signed-off-by: NCong Li <coli@redhat.com>

Signed-off-by: NSuqin Huang <shuang@redhat.com>

1. Install driver (Install / Upgrade / Downgrade).
2. Uninstall driver.
Signed-off-by: NCong Li <coli@redhat.com>