* [fakeintake] add fakeintake raw client

* [fakeintake] use idiomatic go var definition

* [fakeintake] move raw get payloads to private

* [fakeintake] handle errors from server

* [fakeintake] test url path in client unit test

* [fakeintake] run client test on the ci

* [fakeintake] close resp body in integration test