Relicense mgr-salt-ssh

[ycedres]

What does this PR change?

mgr-salt-ssh imports code from Salt, and Salt is licensed under the Apache-2.0 license. Therefore mgr-salt-ssh cannot be licensed under GPLv2. We can re-license mgr-salt-ssh because all historical contributors to the file are members of SUSE.

GUI diff

No difference.

• DONE

Documentation

• No documentation needed: only internal and user invisible changes

• DONE

Test coverage

ℹ️ If a major new functionality is added, it is strongly recommended that tests for the new functionality are added to the Cucumber test suite

• No tests: no code changes

• DONE

Links

Issue(s): https://github.com/SUSE/spacewalk/issues/26773

• DONE

Changelogs

Make sure the changelogs entries you are adding are compliant with https://github.com/uyuni-project/uyuni/wiki/Contributing#changelogs and https://github.com/uyuni-project/uyuni/wiki/Contributing#uyuni-projectuyuni-repository

If you don't need a changelog check, please mark this checkbox:

• No changelog needed

If you uncheck the checkbox after the PR is created, you will need to re-run changelog_test (see below)

Re-run a test

If you need to re-run a test, please mark the related checkbox, it will be unchecked automatically once it has re-run:

• Re-run test "changelog_test"
• Re-run test "backend_unittests_pgsql"
• Re-run test "java_pgsql_tests"
• Re-run test "schema_migration_test_pgsql"
• Re-run test "susemanager_unittests"
• Re-run test "javascript_lint"
• Re-run test "spacecmd_unittests"

Before you merge

Check How to branch and merge properly!

[agraul]

We need to ship this program in an RPM that uses License: Apache-2.0. It can't be licensed Apache-2.0 and distributed in an RPM that uses License: GPL-2.0-only as it's currently the case.

[agraul]

We could use the same format we use in other files, that is only add the spdx header. See

uyuni/rel-eng/chart_push.sh

Lines 3 to 5 in 0b1b443

	# SPDX-FileCopyrightText: 2025 SUSE LLC
	#
	# SPDX-License-Identifier: Apache-2.0

for an example.