add icann.dns to meta-TLD

added icann.dns support to the http server
returns dns response json
> We're copying over a list of properties from packet, the output of oldDNSLookup with the answers, into res, the packet with the proper _socket that was passed into callback.

Sorry, I guess I wasn't clear enough: this is already done in `on 'message'`. DRY.

This should be done once only, somewhere, whether here or elsewhere. One has to go.