Merge PR #24184 into master

Merge PR #24184 into master

* refs/pull/24184/head:
	mgr/DaemonServer: remove any upmaps on merging PGs
	mgr/DaemonServer: prevent merge if either pg is remapped|upmap
	mgr/DaemonServer: move pending merge check for more consistent code
	qa/suites/rados/thrash*/thrashers/careful.yaml: thrash with mgr controller
	mgr/DaemonServer: add option to bypass careful throttling for thrasher
	PendingReleaseNotes: note about mgr/balancer/max_misplaced change
	mgr/DaemonServer: remove stale/misleading check
	mgr/DaemonServer: throttle pgp_num changes based on misplaced %
	mgr/DaemonServer: block pg_num decrease(merge) until pgp_num is reduced
	mgr/DaemonServer: adjust_pgs(): cosmetic change to debug output
	mon/PGMap: add get_recovery_stats()
	mgr/balancer: mgr/balancer/max_misplaced -> pg_max_misplaced
	pybind/mgr/mgr_module: add get_option()
	mgr/DaemonServer: allow pg_num increases that abort pending merges
	mon/OSDMonitor: resent pre-nautilus client ops on aborted merge
	mon/OSDMonitor: make pgp_num track pg_num more consistently

Reviewed-by: John Spray <john.spray@redhat.com>
Reviewed-by: xie xingguo <xie.xingguo@zte.com.cn>