feat(debian): use keyrings instead of key_ids

[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

---

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
• [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

• [docs] Documentation changes
• [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 keyrings both for nginx and passenger when installed from official repositories, and
rewrite 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).
• Covered by new/existing tests (e.g. InSpec, Serverspec, etc.).
• Updated the relevant test pillar.

Additional context

[myii]

Just some minor changes requested.

[myii]

Merged, thanks for the PR, @javierbertoli.

[saltstack-formulas-travis]

🎉 This PR is included in version 2.8.0 🎉

The release is available on GitHub release

Your semantic-release bot 📦🚀

[myii]

@baby-gnu Something that might be interesting to discuss in one of the working group meetings (a potential improvement to the system.rb library):

nginx-formula/test/integration/passenger/controls/repository.rb

Lines 8 to 16 in ec9559b

	# Inspec does not provide a `codename` matcher, so we add ours
	finger_codename = {
	'ubuntu-18.04' => 'bionic',
	'ubuntu-20.04' => 'focal',
	'debian-9' => 'stretch',
	'debian-10' => 'buster',
	'debian-11' => 'bullseye'
	}
	codename = finger_codename[system.platform[:finger]]