Thanks to everyone for their input. I've incorporated the changes, and I think this is ready for voting.
To summarize, the KIP simply proposes to add a feature which expose instance of Kafka Metrics in Kafka Authorizer plugin.The KIP can be found here: https://cwiki.apache.org/confluence/display/KAFKA/KIP-608+-+Expose+Kafka+Metrics+in+Authorizer Thanks a lot! Jeff.
