test: apt resolute gpg remove accounts for gpg-from-sq

[blackboxsw]

Proposed Commit Message

test: apt resolute gpg remove accounts for gpg-from-sq

On resolute and newer, removal of gpg triggers the install
of gpg-from-sq as an alternative for the metapkg if
python3-software-properties or libgpgme45 are still installed.

Ensure removal of the additional rdepends to avoid triggering
installation of gpg-from-sq during the removal of gpg.

Additional Context

Daily integration test failures in CI on test_missing_deps. Symptom is gpg was not seen as being re-installed after initial removal (because gpg-from-sq was added in it's place, as seen in /var/log/apt/term.log during initial test image creation)

Test Steps

CLOUD_INIT_OS_IMAGE=questing CLOUD_INIT_PLATFORM=lxd_container CLOUD_INIT_CLOUD_INIT_SOURCE=NONE tox -e integration-tests -- tests/integration_tests/modules/test_apt_functionality::test_intsall_missing_deps

Merge type

• Squash merge using "Proposed Commit Message"
• Rebase and merge unique commits. Requires commit messages per-commit each referencing the pull request number (#<PR_NUM>)

[Copilot]

Pull request overview

Updates the apt integration test setup to prevent unintended installation of gpg-from-sq on newer Ubuntu releases when removing gpg, addressing CI failures in test_install_missing_deps.

Changes:

• Add release gating for the gpg removal user-data to also remove packages that would otherwise pull in gpg-from-sq.
• Refactor the test user-data into a parameterized template and package lists to simplify per-release behavior.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[holmanb]

Please address the review comment. Otherwise this looks good.

[blackboxsw]

Unrelated test failures resolved by #6908.

[holmanb]

I left a nitpick, but this looks good to me.

[holmanb]

Unrelated test failures resolved by #6908.

Can we update this PR to get passing tests?

[blackboxsw]

Unrelated test failures resolved by #6908.

Can we update this PR to get passing tests?

@holmanb sure, can you please review canonical/pycloudlib#506 so our integration tests will be fixed?

[blackboxsw]

@holmanb pycloudlib version is now fixed per canonical/pycloudlib#509. re-running the integration tests now pass. This is ready for review now.