Displays system's maintenance information.
+--rw management-heartbeat +--rw manager! +--rw heartbeat-enable? empty +--rw heartbeat-threshold-timer? uint32 +--rw heartbeat-action? mhb_action_type
+---x get-maint-mode-status | +--ro output | +--ro config-status? mm-config-status | +--ro overall-status? mm-status-type | +--ro num-stages? uint32 | +--ro current-stage? uint32 | +--ro max-time? uint32 | +--ro max-enable-time? uint32 | +--ro max-disable-time? uint32 | +--ro stages | +--ro stage* [stage-num] | +--ro stage-num uint32 | +--ro time-taken? uint32 | +--ro daemons | +--ro daemon* [daemon-name] | +--ro daemon-name string | +--ro status? mm-status-type +---x get-system-maintenance-rate-monitoring | +--ro output | +--ro rate-monitoring* [interface-name] | +--ro interface-name string | +--ro description? string | +--ro local-state? interface-state | +--ro exception? string | +--ro rate? string +---x maintenance-mode-turn-off | +--ro output | +--ro result? string +---x heartbeat-manager-send-heartbeat +--ro output +--ro result? string