[libvirt] Adding MTU DHCP option when specified

Hi there, I was working on some MTU testing for OpenShift, and I realized that, while libvirt does allow specifying the MTU of the bridge interface, it doesn't plumb it through the DHCP server. This is really easy - it's just an extra line in the dnsmasq.conf file, e.g.: dhcp-option-force=option:mtu,9000 Any interest in this as a patch? And, apologies if this has been discussed to death (though I searched around and didn't find anything). Cheers, -- Casey C.