KIP-716 — Allow configuring the location of the offset-syncs topic with MirrorMaker2

Accepted Kafka 3.0 MirrorMaker

Adds a `replication.policy.class`-scoped config `offset-syncs.topic.location` to MirrorMaker2 to allow the `mm2-offset-syncs` topic to be stored on the target cluster instead of the source. By default MirrorMaker2 writes `mm2-offset-syncs` to the source cluster, requiring write permissions on the source—problematic in secured environments where MirrorMaker2 should be read-only on the source.

Details