HCD-109 Deserialise dse 6.8 PeerInfo files

[michaelsembwever]

InetAddressAndPort fields were previously InetAddress, and serialised as either byte[] addresses or text hostnames.

Adds two unit tests, simple serdes of InetAddress to InetAddressAndPort, and parsing of DSE-6 files (kept in test/data/legacy-metadata/dse-6.8/nodes).

[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

[szymon-miezal]

Looks good to me, a small reminder to not miss the commit message while merging - in the CC repo the commit message is taken from the PR description by default, which is empty now.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[cassci-bot]

❌ Build ds-cassandra-pr-gate/PR-1632 rejected by Butler

---

1 new test failure(s) in 4 builds
See build details here

---

Found 1 new test failures

Test	Explanation	Branch history	Upstream history
...testWithRangeTombstoneMarkersWithoutCompression	regression	🔴🔴🔴🔵	🔵🔵🔵🔵🔵🔵🔵

---

Found 6 known test failures

[michaelsembwever]

the test regression needs inspection…

[szymon-miezal]

Seems like it occasionally fails on main as well, example: https://jenkins-stargazer.aws.dsinternal.org/job/ds-cassandra-build-fast-ci/1751/testReport/org.apache.cassandra.io.sstable.format/SSTableFlushObserverTest/.