message: Change the VLOG level of a Status message traceback to 2
diff: @@ -37,7 +37,7 @@ namespace xla {
  Status WithLogBacktrace(const Status& status) {
  CHECK(!status.ok());
  VLOG(1) << status.ToString();
  - VLOG(1) << tensorflow::CurrentStackTrace();
  + VLOG(2) << tensorflow::CurrentStackTrace();
  return status;
  }
  