qemu: Acquire QUERY job instead of MODIFY when handling NIC_RX_FILTER_CHANGED event
qemu: Acquire QUERY job instead of MODIFY when handling NIC_RX_FILTER_CHANGED event

We are not updating domain XML to new MAC address, just merely
setting host side of macvtap. But we don't need a MODIFY job for
that, QUERY is just fine.

This allows us to process the event should it occur during
migration.

Signed-off-by: Michal Privoznik <83d82aaba2eed257f4814b0c239c260c4caaadf0@redhat.com>
Reviewed-by: Ján Tomko <4cab11cfb98d3c937327354a78eb07dbb6ee2bc6@redhat.com>

libvirt/libvirt,olafhering/libvirt,libvirt/libvirt,jfehlig/libvirt,jfehlig/libvirt,jfehlig/libvirt,olafhering/libvirt,zippy2/libvirt,zippy2/libvirt,olafhering/libvirt,zippy2/libvirt,zippy2/libvirt,olafhering/libvirt,libvirt/libvirt,libvirt/libvirt,jfehlig/libvirt