HCD-84 Feature flag to skip Ford Fulkerson

[bereng]

The Ford Fulkerson optimization may take too long in some configs

What is the issue

Some configs make the FF computation take too long

What does this PR fix and why was it fixed

This PR adds a feature flag so you can workaround it

[github-actions]

Checklist before you submit for review

• Make sure there is a PR in the CNDB project updating the Converged Cassandra version
• Use NoSpamLogger for log lines that may appear frequently in the logs
• Verify test results on Butler
• Test coverage for new/modified code is > 80%
• Proper code formatting
• Proper title for each commit staring with the project-issue number, like CNDB-1234
• Each commit has a meaningful description
• Each commit is not very long and contains related changes
• Renames, moves and reformatting are in distinct commits

[bereng]

This has been tested with the approach of skipping when vnodes>1 and Butler was happy with it. Ci run here

This has been tested with the FF deactivated and Butler is happy with it CI here. Where the only failure is a known one.

As we can see below with the FF enabled all is good as that failures passes locally Testsuite: org.apache.cassandra.utils.IntegerIntervalsTest-compression.jdk11 Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 18.206 sec

[szymon-miezal]

Leaving +1, I have left two rename suggestions in tests for your consideration, they aren't major. I have also left one remark about config property resetting - that one I think should be addressed before merging.

[bereng]

Squashed, rebased, sanity tests ran locally and merged.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
86.7% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[cassci-bot]

❌ Build ds-cassandra-pr-gate/PR-1612 rejected by Butler

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1 new test failure(s) in 8 builds
See build details here

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Found 1 new test failures

Test	Explanation	Branch history	Upstream history
o.a.c.u.b.BinLogTest.testTruncationReleasesLogS...	regression	🔴🔵🔴🔴🔵🔵🔵	🔵🔵🔵🔵🔵🔵🔵

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Found 9 known test failures