KIP-752 — Support --bootstrap-server in ReplicaVerificationTool

Discarded Admin

KIP-752 adds the `--bootstrap-server` flag to `ReplicaVerificationTool` as a replacement for the deprecated `--broker-list` flag, aligning it with the connection flag naming standard adopted across all other Kafka CLI tools in KIP-618. The inconsistent flag name (`--broker-list`) confused users who expected the same connection flag syntax as `kafka-topics.sh` and other tools.

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