[libvirt] [PATCH 0/4] Allow changing guest XML during QEMU migration

This patch series updates the QEMU driver to allow it to take advantage of the migration v3 protocol support for changing guest XML during migration. eg virsh migrate --xml migtest.xml migtest qemu+ssh://somehost/system NB the XML is strictly validated for guest ABI compatibility so only things like host NIC device names or host disk file paths can be changed