Merge pull request #38522 from tchaikov/wip-mon-health-cleanup

mon/HealthMonitor: split large method into smaller ones and cleanups

Reviewed-by: Neha Ojha <nojha@redhat.com>

diff --cc src/common/options.cc
Simple merge

diff --cc src/mon/Monitor.cc
Simple merge

diff --cc src/mon/Monitor.h
Simple merge