Merge pull request #145 from raghavgautam/master

retention test cleanup
provide using getColoName()
Merge pull request #146 from rostafiychuk/coloname

provide using getColoName()
removing busy wait
remove unused methods
use oozie client
remove unused parameter
removing display inputs method.
small cleanup
use oozie client
simplifying code
depricating util.print() method
use oozie client
use logger
use oozie client
inlining method
minor refactoring
use TimeUnit sleep
remove busy waits
pushing getDefaultOozieCoordinator() function call in validateFailureRetries() function