Reverse dependencies for zookeeper-jars

Latest version of the following gems require zookeeper-jars

Gem	Version	Date	Downloads
kafka-jars +39.5 Thousand Downloads	`0.10.0.1` January 13, 2017	January 13, 2017	39.5 Thousand
curator-jars +12.2 Thousand Downloads	`2.5.0.1` June 23, 2014	June 23, 2014	12.2 Thousand
zkclient-jars +6.34 Thousand Downloads	`0.8.0.2` October 26, 2016	October 26, 2016	6.34 Thousand