Jar deployment to local file instead of HDFS directly

https://issues.cask.co/browse/CDAP-91
Bamboo build is green: https://builds.cask.co/browse/CDAP-DUT119
but then unit-test will be writing ti /tmp/data.. which in general we want to avoid. Also, I don't like absolute path in default.xml. It should be most generic. If in the cluster mode it needs something different, shouldn't it be set in cdap-site.xml in the cluster?