use assertFailed/Partial... from AssertUtil
runRemoteScript using runRemoteScriptAsSudo
InstanceUtil constructor deleted
some methods moved from Util to OozieUtil and BundleUtil
some methods moved to TimeUtil
use runRemoteScriptAsSudo instead of runRemoteScript
Merge pull request #207 from rostafiychuk/master

AssertUtil + Util + InstanceUtil clean up