catch output params from the different oozie workflow actions
lazy init of hadoop clients allow to define the user for HBase admin and jtClient once. The user is available as service property
more logging in the oozie job monitor procedure that tries to fetch the job report. More java8 refactorings
added param declaring the oozie job action names to be reported back to the workflow logger
codebase used to migrate to java8 the production system