message: feat(express): log request method and url upon failed request
  This is useful to help narrow down failing requests within a single
  proxied express call.
  Also, print stack trace and error message for any type of 5xx error,
  instead of only 500's.
  Ticket:
diff: @@ -756,7 +756,10 @@ function promiseWrapper(promiseRequestHandler: Function) {
  if (!(status >= 200 && status < 300)) {
  console.log('error %s: %s', status, err.message);
  }
  - if (status === 500) {
  + if (status >= 500 && status <= 599) {
  + if (err.response && err.response.request) {
  + console.log(`failed to make ${err.response.request.method} request to ${err.response.request.url}`);
  + }
  console.log(err.stack);
  }
  res.status(status).send(result);
  