feat(debian): use repository keyring instead of key_id

[javierbertoli]

PR progress checklist (to be filled in by reviewers)

• [ ] Changes to documentation are appropriate (or tick if not required)
• [ ] Changes to tests are appropriate (or tick if not required)
• [ ] Reviews completed

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What type of PR is this?

Primary type

• [ ] [build] Changes related to the build system
• [ ] [chore] Changes to the build process or auxiliary tools and libraries such as documentation generation
• [ ] [ci] Changes to the continuous integration configuration
• [X] [feat] A new feature
• [ ] [fix] A bug fix
• [ ] [perf] A code change that improves performance
• [ ] [refactor] A code change that neither fixes a bug nor adds a feature
• [ ] [revert] A change used to revert a previous commit
• [ ] [style] Changes that do not affect the meaning of the code (white-space, formatting, missing semi-colons, etc.)

Secondary type

• [X] [docs] Documentation changes
• [X] [test] Adding missing or correcting existing tests

Does this PR introduce a BREAKING CHANGE?

No.

Related issues and/or pull requests

Describe the changes you're proposing

Debian family is deprecating the use of GPG keys (managed through apt-key) in favor of keyrings. This PR adds the repositorykeyring when installing from the official repository, and rewrites the sources.list file accordingly.

Pillar / config required to test the proposed changes

Debug log showing how the proposed changes work

Documentation checklist

• [ ] Updated the README (e.g. Available states).
• [ ] Updated pillar.example.

Testing checklist

• [ ] Included in Kitchen (i.e. under state_top).
• [X] Covered by new/existing tests (e.g. InSpec, Serverspec, etc.).
• [X] Updated the relevant test pillar.

Additional context

[noelmcloughlin]

I think Tumbleweed is failing because of https://progress.opensuse.org/issues/104193#change-475218 so you could disable that platform - or try a workaround: sed -i 's|download.opensuse|mirrorcache.opensuse|g' *.repo

[saltstack-formulas-travis]

:tada: This PR is included in version 2.4.0 :tada:

The release is available on GitHub release

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