Additions/Modifications for Kafka installation

New roles and Cookbook for Kafka
Fixed version numbers
Fixed role names to include Head word
Merge pull request #170 from amithkanand/kafka_additions

Additions/Modifications for Kafka installation
Changes to download and upload additional cookbooks required by jmxtrans
:Merge branch 'hadoop_hortonworks' of https://github.com/bloomberg/chef-bcpc into hadoop_hortonworks

Conflicts:
	build_bins.sh
	setup_chef_cookbooks.sh