message: [tf.data] Add dataset params to batch dataset traceme.
diff: @@ -133,6 +133,13 @@ class BatchDatasetOp::Dataset : public DatasetBase {
  return dataset()->input_->MakeIterator(ctx, prefix(), &input_impl_);
  }
  + string BuildTraceMeName() override {
  + return strings::StrCat(
  + prefix(), "#batch_size=", dataset()->batch_size_,
  + ",drop_remainder=", dataset()->drop_remainder_ ? "true" : "false",
  + ",parallel_copy=", dataset()->parallel_copy_ ? "true" : "false", "#");
  + }
  +
  Status GetNextInternal(IteratorContext* ctx,
  std::vector<Tensor>* out_tensors,
  bool* end_of_sequence) override {
  