Fix for EUCA-5133 Check the system is up when running the volume and snapshot updates
Fix for EUCA-5133 make jetty shutdown on stop
Fix for EUCA-5133 Only run the fault queue when the system is fully up
Fix for EUCA-5133 Make DescribeSensorsListener only execute fireEvent() when the system is operational and not more often than DEFAULT_POLL_INTERVAL_MINS
Fix for EUCA-5133 Add shutdown hook for DB resource checker
Fixes EUCA-4881 Only run listener on ENABLE service host
Fixes EUCA-4881 Only run listener on ENABLE service host
Fixes EUCA-4881 Only run listener on ENABLE service host
Fixes EUCA-4882 Only run listener on ENABLE service host