HBASE-29620 Refactor TestRSGroupsKillRS - #8623
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What changes were proposed in this pull request?
Split the mixed-version scenario into
TestRSGroupsKillRSWithDifferentVersions. Use a testHMasterimplementation to report a lower version for the target RegionServer, and restoreVersionInfo#getVersionto return the generated version directly.Why are the changes needed?
The existing test changes process-wide
VersionInfostate through reflection. Since MiniCluster components run in the same JVM, this may affect unrelated servers and requires production code to keep mutable state only for testing.How was this patch tested?