* feat(region): add guest rescue api && download initrd from baremetal tftp server && add baremetal agent ip finder & update pic address & support ip kernel config.
* feat(host-deployer): use qemu-kvm as default deploy dirver
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Co-authored-by: boironic@gmail.com <boironic@gmail.com>
1. add needChangeName to indicate whether to change the name when
putting down
2. remove unnecessary IsVgActice
3. findPartitions from /dev/{vgname}/{lvname} or
/dev/mapper/{vgname}-{lvname}
Add drvier libguestfs to support deploy more operator system,
you can use it by edit host config file add 'image_deploy_driver: libguestfs'.
By the default host-deploy support run three guestfish at the same time.
And host deployer will recycle free guestfish every ten minitues.
cherrypick: release/3.6
