message: Update with the new tr gen for cuda test.
diff: @@ -76,7 +76,7 @@ protected:
  std::unique_ptr<Mtx> gen_mtx(int num_rows, int num_cols)
  {
  return gko::test::generate_random_lower_triangular_matrix<Mtx>(
  - num_rows, num_cols,
  + num_rows, num_cols, false,
  std::uniform_int_distribution<>(num_cols, num_cols),
  std::normal_distribution<>(-1.0, 1.0), rand_engine, ref);
  }
  