AMBARI-5022. Add output detail for toggling Maintenance State (ncole)
AMBARI-4983. During upgrade. migrate decommissioned DN hosts list to the new format. (swagle)
AMBARI-5029. Improve Tez dag layout for a fully connected graph. (srimanth)
AMBARI-5031. gmetad/gmond left in init after install.(vbrodetskyi)
AMBARI-5025. Add unit tests for java upgrade. Additional fix. (mpapirkovskyy)
AMBARI-5020. Lost heartbeat on host but ganglia shows a heartbeat lost (dlysnichenko)