KIP-270 added some integration tests, but they were not marked with the appropriate annotation and bloat the `unitTest` target. This annotates them properly so we get faster unit tests.
### Committer Checklist (excluded from commit message) - [ ] Verify design and implementation - [ ] Verify test coverage and CI build status - [ ] Verify documentation (including upgrade notes) [ Full content available at: https://github.com/apache/kafka/pull/5631 ] This message was relayed via gitbox.apache.org for [email protected]
