[Flaky test] Clear transient cluster setting at the end of the test

[gbbafna]

Description

Clear transient cluster setting at the end of the test to ensure test clean up doesn't fail

Remove check of non zero assertion of time as it is non deterministic

Related Issues

Resolves #11179 , #11221

Check List

• New functionality includes testing.
  • All tests pass
• New functionality has been documented.
  • New functionality has javadoc added
• Failing checks are inspected and point to the corresponding known issue(s) (See: Troubleshooting Failing Builds)
• Commits are signed per the DCO using --signoff
• Commit changes are listed out in CHANGELOG.md file (See: Changelog)
• Public documentation issue/PR created

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[github-actions]

❌ Gradle check result for b580023: FAILURE

Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green. Is the failure a flaky test unrelated to your change?

[github-actions]

❌ Gradle check result for 0a40e2e: FAILURE

Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green. Is the failure a flaky test unrelated to your change?

[github-actions]

❌ Gradle check result for b580023: FAILURE

Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green. Is the failure a flaky test unrelated to your change?

[andrross]

❌ Gradle check result for b580023: FAILURE

#12639

[github-actions]

❌ Gradle check result for 0a40e2e: FAILURE

Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green. Is the failure a flaky test unrelated to your change?

[github-actions]

❌ Gradle check result for b580023: FAILURE

Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green. Is the failure a flaky test unrelated to your change?

[owaiskazi19]

@gbbafna looks like Spotless is complaining. Can you please format and push again?

[github-actions]

❌ Gradle check result for 2f8ff13: FAILURE

Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green. Is the failure a flaky test unrelated to your change?

[github-actions]

❌ Gradle check result for 2f8ff13: FAILURE

Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green. Is the failure a flaky test unrelated to your change?

[github-actions]

❌ Gradle check result for 24d986c: FAILURE

Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green. Is the failure a flaky test unrelated to your change?

[github-actions]

❕ Gradle check result for 24d986c: UNSTABLE

• TEST FAILURES:

      3 org.opensearch.cluster.MinimumClusterManagerNodesIT.testThreeNodesNoClusterManagerBlock

Please review all flaky tests that succeeded after retry and create an issue if one does not already exist to track the flaky failure.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 71.55%. Comparing base (b15cb0c) to head (24d986c).
Report is 260 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main   #13508      +/-   ##
============================================
+ Coverage     71.42%   71.55%   +0.13%     
- Complexity    59978    61086    +1108     
============================================
  Files          4985     5051      +66     
  Lines        282275   287119    +4844     
  Branches      40946    41602     +656     
============================================
+ Hits         201603   205452    +3849     
- Misses        63999    64675     +676     
- Partials      16673    16992     +319     

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