message: Log value of TF_AUTOTUNE_THRESHOLD
diff: @@ -151,6 +151,7 @@ class AutoTuneMap {
  int min_warmup_iterations = 10;
  const char* threshold_str = getenv("TF_AUTOTUNE_THRESHOLD");
  if (threshold_str != nullptr) {
  + VLOG(1) << "TF_AUTOTUNE_THRESHOLD = " << threshold_str;
  strings::safe_strto32(threshold_str, &min_score_threshold_);
  }
  const char* min_warmup_iteration_str =
  