BUG-9795 command line is always picking up 2nd arg for cluster name, not 2nd unused arg -tests to show I'm mistaken
BUG-9795 command line improvements: -S key=val syntax, moved all arguments into an Arguments class
(experimentally) drop SLF4J registration
BUG-92544 Hoya to work in secure clusters: AM to handle the --secure option, and if so verify it's configured properly -including with HDFS credentials
Client to include Zookeeper in its JAR list
BUG-92544 in a secure cluster, the principal for HDFS is propagated, along with a token delegaing to YARN  the submitter's filesystem access rights (lifted from Distributed Shell)