Merge PR #44054 into master

Merge PR #44054 into master

* refs/pull/44054/head:
	doc/rados/operations: document pg_num_max
	mgr: set max of 32 pgs for .mgr pool
	mgr/dashboard: expect pg_num_max property for pools
	mon/OSDMonitor: add option --pg-num_max arg for create pool
	mon/OSDMonitor: disallow setting pg_num < min or > max
	mgr/pg_autoscaler: apply pg_num_max
	mon: add pg_num_max pool property

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