* refs/pull/23611/head:
mgr/devicehealth: fix exceptions
doc/mgr/devicehealth: update docs
mgr/devicehealth: leave health monitoring off by default
mgr/devicehealth: add 'device monitoring {on,off}' commands
mgr/devicehealth: 10m wakeup interval is sufficient
mgr/devicehealth: scrape at scrape_interval intervals
mgr/devicehealth: UTC everywhere
mgr/devicehealth: fix sleep_interval configurable