* feat: Adding a "nearest.service.local" mode to internal DNS
* Pass listenAddr to internal DNS server (rather than calling into network.MachineIP)
Also adds an exact round-robin via "rr.{service}" mode. Not sure we want that over random or not, though.
* Remove the resolved count and rotating round-robin. "rr.name" mode is now the same as default with random shuffle.
* Add test on nearest internal DNS lookup
* Add docs on internal DNS order modes