By default, gRPC fetches TXT report while resolving a domain.
0914bba6c5/internal/resolver/dns/dns_resolver.go (L336)
This leads to a hanging dial if DNS is unavailable, even though the host
may be specified in `/etc/hosts` (hello, localhost!).
Use `grpc.WithDisableServiceConfig()` to override the default.
This option seems impossible to override with `WithGRPCDialOpts()`,
but we do not use service config anyway.
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
