Avoid leaking http.Transports.
Avoid leaking http.Transports.

Avoids leaking http.Transports on client creation by re-using
transports.

Removes duplicate close of response body in httpRespToAPIResp which
resulted in undefined behavior.

intelsdi-x/snap,mjbrender/snap,sandlbn/snap,mjbrender/snap,sandlbn/snap,intelsdi-x/snap