HDFS: initial working example + additions and dirty hacks to Fabric8 cod...

...e to support recursive properties replacement.

Added a couple of TODOs

Jolokia not working, was asking for passwords?

I have no really idea how Hadoop works and what is expected to do in details, but this is a rendition of most popular tutorial out there like http://nextgenhadoop.blogspot.in/2013/10/steps-to-install-hadoop-220-stable.html

Sending PR to private fork to validate the modification to the .java files