Use SPDX-License-Identifier, mention all licenses in galaxy.yml, add …

…missing license file (#1398)

Use SPDX-License-Identifier, mention all licenses in galaxy.yml, add missing license file

SUMMARY
Implements ansible-community/community-topics#112 (comment).
Also adds a missing license file for the BSD-2-Clause licensed vmware_spbm and vmware_rest_client module utils.
ISSUE TYPE

Docs Pull Request
Feature Pull Request

COMPONENT NAME
collection
ADDITIONAL INFORMATION
I've also tried to unify the format. For example, sometimes there was an empty comment before the copyright (# ) and sometimes there was an empty line without a comment.
cc @felixfontein

Reviewed-by: Felix Fontein <[email protected]>

This commit was initially merged in https://github.com/ansible-collections/community.vmware
See: ansible-collections/community.vmware@19b8ffe

plugins/modules/vmware_guest.py

@@ -1,8 +1,9 @@
 #!/usr/bin/python
 # -*- coding: utf-8 -*-
-#
+
 # This module is also sponsored by E.T.A.I. (www.etai.fr)
-# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
+# 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
 
 from __future__ import absolute_import, division, print_function
 __metaclass__ = type

plugins/modules/vmware_guest_powerstate.py

@@ -1,8 +1,9 @@
 #!/usr/bin/python
 # -*- coding: utf-8 -*-
-#
+
 # Copyright: (c) 2017, Abhijeet Kasurde <[email protected]>
-# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
+# 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
 
 from __future__ import absolute_import, division, print_function
 __metaclass__ = type