[PATCH 1/6] rteval: Change test file licenses from GPL-2.0-only to GPL-2.0-or-later

All test files were incorrectly marked as GPL-2.0-only when they should
be GPL-2.0-or-later to match the rest of the codebase. This makes the
licensing consistent across all rteval source files.

Updated files:
- tests/README.md
- tests/test_cpusetmanager.py
- tests/test_process_blocklist.py
- tests/unittest-legacy.py

Signed-off-by: John Kacur <[email protected]>
---
 tests/README.md                 | 2 +-
 tests/test_cpusetmanager.py     | 2 +-
 tests/test_process_blocklist.py | 2 +-
 tests/unittest-legacy.py        | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/tests/README.md b/tests/README.md
index cac4f0e4021f..1a79cd3f578b 100644
--- a/tests/README.md
+++ b/tests/README.md
@@ -166,7 +166,7 @@ Create a new test file following this pattern:
 
 ```python
 #!/usr/bin/env python3
-# SPDX-License-Identifier: GPL-2.0-only
+# SPDX-License-Identifier: GPL-2.0-or-later
 # Copyright 2026 John Kacur <[email protected]>
 """
 Description of what this test module tests.
diff --git a/tests/test_cpusetmanager.py b/tests/test_cpusetmanager.py
index 6501b9a022d4..984e0f900edf 100644
--- a/tests/test_cpusetmanager.py
+++ b/tests/test_cpusetmanager.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# SPDX-License-Identifier: GPL-2.0-only
+# SPDX-License-Identifier: GPL-2.0-or-later
 # Copyright 2026 John Kacur <[email protected]>
 """
 Unit tests for rteval CpusetManager functionality.
diff --git a/tests/test_process_blocklist.py b/tests/test_process_blocklist.py
index a568ea74478f..3c528c9607df 100644
--- a/tests/test_process_blocklist.py
+++ b/tests/test_process_blocklist.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# SPDX-License-Identifier: GPL-2.0-only
+# SPDX-License-Identifier: GPL-2.0-or-later
 # Copyright 2026 John Kacur <[email protected]>
 """
 Unit tests for process blocklist functionality in rteval.
diff --git a/tests/unittest-legacy.py b/tests/unittest-legacy.py
index 00811d7454ef..9e5ba3d0e831 100644
--- a/tests/unittest-legacy.py
+++ b/tests/unittest-legacy.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# SPDX-License-Identifier: GPL-2.0-only
+# SPDX-License-Identifier: GPL-2.0-or-later
 # Copyright (c) 2010 Red Hat, Inc. All rights reserved.
 #
 # Author: David Sommerseth <[email protected]>
-- 
2.55.0