[VOTE] KIP-720 Deprecate MirrorMaker v1

[Ryanne Dolan]

Hey y'all, I'm starting the vote on KIP-720, which proposes to deprecate
the original MirrorMaker in the upcoming 3.0 major release.

https://cwiki.apache.org/confluence/display/KAFKA/KIP-720%3A+Deprecate+MirrorMaker+v1

Thanks!
Ryanne