[WIP] DNS daemon prototype

Experimental DNS daemon serving SRV lookups in the form of `service.job.env.product` based on the catalog stored in consul.

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@soundcloud/iss - please note this is experimental and is meant to increase visibility on the findings of consul interaction through glimpse intermediates.
`log.Lmicroseconds` ∋ `log.Ldate` ∪ `log.Ltime` ∪ `log.Lmicroseconds`
∴ `log.SetFlags(log.Lmicroseconds | log.Lshortfile)`