[autobackport: sssd-2-9] tests: poll for KCM TGT renewal instead of fixed sleep

[sssd-bot]

This is an automatic backport of PR#8650 tests: poll for KCM TGT renewal instead of fixed sleep to branch sssd-2-9, created by @madhuriupadhye.

Caution

@madhuriupadhye The patches did not apply cleanly. It is necessary to resolve conflicts before merging this pull request. Commits that introduced conflict are marked with CONFLICT!.

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git fetch sssd-bot refs/heads/SSSD-sssd-backport-pr8650-to-sssd-2-9
git checkout SSSD-sssd-backport-pr8650-to-sssd-2-9
git push sssd-bot SSSD-sssd-backport-pr8650-to-sssd-2-9 --force

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Original commits
233db39 - tests: poll for KCM TGT renewal instead of fixed sleep

Backported commits

• 60c6b16 - CONFLICT! tests: poll for KCM TGT renewal instead of fixed sleep

Conflicting Files Information (check for deleted and re-added files)

• CONFLICT! tests: poll for KCM TGT renewal instead of fixed sleep

On branch SSSD-sssd-backport-pr8650-to-sssd-2-9
You are currently cherry-picking commit 233db39fc.
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Unmerged paths:
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	both modified:   src/tests/system/tests/test_kcm.py

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Original Pull Request Body

test_kcm__tgt_renewal_updates_ticket_as_configured no longer uses a fixed sleep(5) and flaky retries.
The test now polls klist every 0.5s and asserts renewal by checking that TGT start or end time advances, with a detailed failure message that prints both initial and last timestamps.

To match KCM renewal behavior (renewal only starts after roughly half the ticket lifetime), the test uses a short renewable ticket (-r 5s -l 5s) and a bounded polling window (9s) so it stays fast while still waiting long enough for renewal to be attempted.
Also removed the temporary CI comment and the flaky marker from this test.

[gemini-code-assist]

Code Review

This pull request removes a flaky test marker and updates the KCM TGT renewal test to use a polling mechanism instead of a fixed sleep, which improves test reliability. However, the changes currently include unresolved merge conflict markers in src/tests/system/tests/test_kcm.py that must be removed for the code to be functional.

[spoore1]

LGTM

[sssd-bot]

The pull request was accepted by @alexey-tikhonov with the following PR CI status:

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🟢 CodeQL (success)
🟢 rpm-build:centos-stream-9-x86_64:upstream (success)
🟢 ci / prepare (success)
🟢 ci / system (centos-9) (success)
🟢 Static code analysis / codeql (success)
🟢 Static code analysis / pre-commit (success)
🟢 Static code analysis / python-system-tests (success)

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