Merge pull request #19973 from liewegas/wip-peering-fast-dispatch

osd: fast dispatch of peering events and pg_map + osd sharded wq refactor

Reviewed-by: Greg Farnum <gfarnum@redhat.com>

diff --cc PendingReleaseNotes
Simple merge

diff --cc qa/suites/rados/singleton/all/recovery-preemption.yaml
Simple merge

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

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

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

diff --cc src/msg/Message.cc
Simple merge

diff --cc src/msg/Message.h
Simple merge

diff --cc src/osd/PG.cc
Simple merge

diff --cc src/osd/osd_types.h
Simple merge