DNS functions do not try to search in system-wide defined domain

[vladimirtiukhtin]

Describe the solution you'd like
For example

resolver.resolveSrv('_etcd-server._tcp.example.com', function (err, addresses, family)

works fine rather than

resolver.resolveSrv('_etcd-server._tcp', function (err, addresses, family)

even if

dig +noall +answer +search SRV _etcd-server._tcp

returnes correct result
This probably means that the module does not understand domain it is working in and can not resolve short names

Describe alternatives you've considered
I would like the module to check if domain is system-wide defined and use it, or at least I should be able to set domain manually

Thanks

[silverwind]

This looks to be a feature request to support search domains in resolve methods for which we already have #17850 open.