title: Golang: http2: server sent GOAWAY and has a lastStreamID
body: <p>We're using go1.12.1, as a HTTP client, if server sent a GOAWAY frame, I just wanna know Golang net library supported:</p>
  <ol>
  <li><p>http2goAwayTimeout configurable? I can see there's a TODO: configuration in the description, so not configurable now?</p>
  </li>
  <li><p>There's lastStreamId in the frame, does Golang supported to resend the request that StreamId higher than lastStreamId? Is there any configuration?</p>
  </li>
  </ol>
  <p>Thanks a lot.</p>