KIP-1347 — Overriding voter set on storage formatting

Discussion KRaftAdmin

Adds an --override-voters option to kafka-storage.sh format that rewrites the persisted VotersRecord in an already-formatted metadata log, replacing controller endpoints (hostnames/ports) from --initial-controllers while rejecting node and directory ID changes. With KIP-853 dynamic quorums the voter set lives in the metadata log rather than in controller.quorum.voters, so a DNS domain rename leaves controllers loading unresolvable peer endpoints at startup and unable to form the quorum needed by UpdateVoterRequest to fix them.

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