NS1StatsSink

*Title*: Feature Request NS1StatsSink

*Description*:
>I would like to be able to publish stats to a remote endpoint. I would specifically like to share load data (#of connections per listener) with NS1 to enable [LoadShedding](https://ns1.com/knowledgebase/load-shedding) between data centers. A more generic or base HttpStatsSink that could accomplish the same result would be acceptable.

Thanks for your time and consideration.