Add correct boot order for guest disks on MTV

MTV 2.10.1

100%

1.Prepare a guest with multiple disks on VMware and boot partition is in last disk
2.Migrate the guest from VMware on MTV, but the guest can't boot into OS after migration, the root cause is the boot order of the guest is incorrect

The bug has been fixed on https://issues.redhat.com/browse/RHEL-110742 from v2v perspective, but MTV hasn't added the fix 

MTV adds the fix of https://issues.redhat.com/browse/RHEL-110742 

Can't reproduce the bug on rhel10.1