Add license information

Signed-off-by: yongjunhong <[email protected]>

Author: YongGoose

tests/pytest/conftest.py

@@ -1,3 +1,8 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# Copyright (c) 2021 LG Electronics Inc.
+# SPDX-License-Identifier: Apache-2.0
+
 import pytest
 import subprocess