[autobackport: sssd-2-12] adding sss_ssh_knownhosts test case

[sssd-bot]

This is an automatic backport of PR#8448 adding sss_ssh_knownhosts test case to branch sssd-2-12, created by @danlavu.

Please make sure this backport is correct.

Note

The commits were cherry-picked without conflicts.

You can push changes to this pull request

git remote add sssd-bot git@github.com:sssd-bot/sssd.git
git fetch sssd-bot refs/heads/SSSD-sssd-backport-pr8448-to-sssd-2-12
git checkout SSSD-sssd-backport-pr8448-to-sssd-2-12
git push sssd-bot SSSD-sssd-backport-pr8448-to-sssd-2-12 --force

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Original commits
b4e88e8 - adding sss_ssh_knownhosts test case

Backported commits

• 618ff6a - adding sss_ssh_knownhosts test case

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Original Pull Request Body

[gemini-code-assist]

Code Review

This pull request adds a system test for sss_ssh_knownhosts. The new test contains a syntax error that will prevent it from running. Additionally, it introduces dependencies on external network services, which can cause test flakiness. I've provided a suggestion to fix the syntax and remove the external dependencies to improve test reliability.

[gemini-code-assist]

There are two issues with the parametrization of this test:

1. Syntax Error: There is a missing comma at the end of line 69, between the list of argvalues and the ids keyword argument. This will cause a SyntaxError.

2. External Test Dependencies: The test cases for sssd.io and 1.1.1.1 introduce a dependency on external network services. This can lead to flaky tests if the test environment lacks internet access or if external DNS resolution fails. System tests should be self-contained to ensure they are reliable and reproducible.

I've provided a suggestion that fixes the syntax and removes the external dependencies. The client.test case is sufficient for testing a resolvable hostname within the test environment.

Suggested change

	[("sssd.io", True), ("1.1.1.1", True), ("client.test", True), ("asdf.test", False), ("super.bad.hostname", False)],
	ids=["sssd.io", "1.1.1.1", "client.test", "asdf.test", "super.bad.hostname"],
	[("client.test", True), ("asdf.test", False), ("super.bad.hostname", False)],
	ids=["client.test", "asdf.test", "super.bad.hostname"],