[skip ci] license: add license to tests

tests/__init__.py

+# -*- coding: utf-8 -*-
+#
+# This file is part of CERN Search.
+# Copyright (C) 2018-2019 CERN.
+#
+# CERN Search is free software; you can redistribute it and/or modify it
+# under the terms of the MIT License; see LICENSE file for more details.
\ No newline at end of file

tests/conftest.py

+# -*- coding: utf-8 -*-
+#
+# This file is part of CERN Search.
+# Copyright (C) 2018-2019 CERN.
+#
+# CERN Search is free software; you can redistribute it and/or modify it
+# under the terms of the MIT License; see LICENSE file for more details.
 
 def pytest_addoption(parser):
     parser.addoption("--endpoint", action="store",

tests/test_binary_files.py

+# -*- coding: utf-8 -*-
+#
+# This file is part of CERN Search.
+# Copyright (C) 2018-2019 CERN.
+#
+# CERN Search is free software; you can redistribute it and/or modify it
+# under the terms of the MIT License; see LICENSE file for more details.
+
 import json
 
 import pytest

tests/test_schema_validation.py

+# -*- coding: utf-8 -*-
+#
+# This file is part of CERN Search.
+# Copyright (C) 2018-2019 CERN.
+#
+# CERN Search is free software; you can redistribute it and/or modify it
+# under the terms of the MIT License; see LICENSE file for more details.
+
 import json
 
 import pytest

tests/test_search.py

+# -*- coding: utf-8 -*-
+#
+# This file is part of CERN Search.
+# Copyright (C) 2018-2019 CERN.
+#
+# CERN Search is free software; you can redistribute it and/or modify it
+# under the terms of the MIT License; see LICENSE file for more details.
+
 import json
 
 import pytest

tests/test_ui.py

+# -*- coding: utf-8 -*-
+#
+# This file is part of CERN Search.
+# Copyright (C) 2018-2019 CERN.
+#
+# CERN Search is free software; you can redistribute it and/or modify it
+# under the terms of the MIT License; see LICENSE file for more details.
+
 import pytest
 import requests