Support cobbler LWRP
Merge pull request #6 from cbaenziger/cobbler_lwrp

Support cobbler LWRP
Changes to allow Kafka set-up to be able to use existing Hadoop ZooKeeper quorum
Changes to remove instance variable from library function znode_exists? and also to handle any ZK connection failure gracefully
Created a Kafka specific attribute file to overwrite the attributes in Kafka community cookbook
Changed Kafka server port to 6667
Changes to upgrade Kafka cookbook to version v0.6.0
Merge pull request #16 from bijugs/upgrade_kafka_cookbook

Changes to upgrade Kafka cookbook to version v0.6.0