gvproxy internal dns resolver needs to handle all query types

[Luap99]

see

gvisor-tap-vsock/pkg/services/dns/dns.go

Lines 79 to 116 in db793a5

	case dns.TypeNS:
	records, err := resolver.LookupNS(context.TODO(), q.Name)
	if err != nil {
	m.Rcode = dns.RcodeNameError
	return
	}
	for _, ns := range records {
	m.Answer = append(m.Answer, &dns.NS{
	Hdr: dns.RR_Header{
	Name: q.Name,
	Rrtype: dns.TypeNS,
	Class: dns.ClassINET,
	Ttl: 0,
	},
	Ns: ns.Host,
	})
	}
	case dns.TypeA:
	ips, err := resolver.LookupIPAddr(context.TODO(), q.Name)
	if err != nil {
	m.Rcode = dns.RcodeNameError
	return
	}
	for _, ip := range ips {
	if len(ip.IP.To4()) != net.IPv4len {
	continue
	}
	m.Answer = append(m.Answer, &dns.A{
	Hdr: dns.RR_Header{
	Name: q.Name,
	Rrtype: dns.TypeA,
	Class: dns.ClassINET,
	Ttl: 0,
	},
	A: ip.IP.To4(),
	})
	}
	}

The dns resolver only handles NS and A queries and ignores all other types and returns nothing in this case.
This was reported by a users who wants to use SRV or TXT records in his podman container, see containers/podman#18823