Add default license header to files which have no copyright or license header yet (#5074)

* Add default license header to files which have no copyright or license header yet.

* yml extension should have been xml...

.azure-pipelines/templates/coverage.yml

@@ -1,3 +1,8 @@
+---
+# Copyright (c) Ansible Project
+# GNU General Public License v3.0+ (see LICENSES/GPL-3.0-or-later.txt or https://www.gnu.org/licenses/gpl-3.0.txt)
+# SPDX-License-Identifier: GPL-3.0-or-later
+
 # This template adds a job for processing code coverage data.
 # It will upload results to Azure Pipelines and codecov.io.
 # Use it from a job stage that completes after all other jobs have completed.

.azure-pipelines/templates/matrix.yml

@@ -1,3 +1,8 @@
+---
+# Copyright (c) Ansible Project
+# GNU General Public License v3.0+ (see LICENSES/GPL-3.0-or-later.txt or https://www.gnu.org/licenses/gpl-3.0.txt)
+# SPDX-License-Identifier: GPL-3.0-or-later
+
 # This template uses the provided targets and optional groups to generate a matrix which is then passed to the test template.
 # If this matrix template does not provide the required functionality, consider using the test template directly instead.
 

.azure-pipelines/templates/test.yml

@@ -1,3 +1,8 @@
+---
+# Copyright (c) Ansible Project
+# GNU General Public License v3.0+ (see LICENSES/GPL-3.0-or-later.txt or https://www.gnu.org/licenses/gpl-3.0.txt)
+# SPDX-License-Identifier: GPL-3.0-or-later
+
 # This template uses the provided list of jobs to create test one or more test jobs.
 # It can be used directly if needed, or through the matrix template.