[VOTE] KIP-1280: Update MirrorMaker to use KIP-877 to emit metrics

[Mickael Maison]

Hi,

I'd like to start a vote on KIP-1280:
https://cwiki.apache.org/confluence/x/a4s8G

This proposes updating the MirrorMaker connectors to use KIP-877 to
register their metrics.

Thanks,
Mickael