d/patches: Add patch fixing IXFR to AXFR fallback with dnsmasq
(copied from BTS report)
When using knot as a slave it currently has a bug where it doesn't properly fall back to AXFR zone transfer if an IXFR request is answered with what amounts to an empty response. Dnsmasq's AXFR functionality triggers this behavour preventing all but the first XFR from occurring.