KAFKA 18238 - fIdentify the first commit where a test became flaky

[santhoshct]

Added script to find the commit that would have caused the flakiness.

Flaky Pattern Detection:

For each test execution in chronological order:

• When a FAILED or FLAKY status is encountered, opens a window of size M
• Counts failures/flaky occurrences within that window
• If count ≥ N, marks this as a potential flaky pattern
• Records detailed information about the pattern including:
  • Initial failing commit
  • Build information
  • All test executions within the window

Example

Given:

• Window size (M) = 6
• Required failures (N) = 2

Timeline:
[PASS] -> [PASS] -> [FAIL] -> [PASS] -> [FAIL] -> [PASS] -> [PASS]
^
|
Window starts here

Window Analysis:
[FAIL], [PASS], [FAIL], [PASS], [PASS] = 2 failures in 5 executions
Result: Pattern detected (2 failures ≥ N within window of size 6)

Committer Checklist (excluded from commit message)

• Verify design and implementation
• Verify test coverage and CI build status
• Verify documentation (including upgrade notes)