v6.0-beta.66
* Uplift HBase to 2.1.5 and refactor code accordingly * Uplift Kafka to 2.1.1 and refactor code accordingly * Uplift Curator to 4.2.0
* Uplift HBase to 2.1.5 and refactor code accordingly * Uplift Kafka to 2.1.1 and refactor code accordingly * Uplift Curator to 4.2.0