Merge PR #25190 into master

* refs/pull/25190/head:
	mgr/prometheus: adjust to new 'df' fields
	mon/Monitor: fix newline between df section
	doc: update docs for new ceph df output
	mon/PGMap: break down RAW usage by device class
	mon/PGMap: tweak df headers
	mon/PGMap: GLOBAL -> RAW STORAGE in 'df' output
	mon/PGMap: dump_fs_stats -> dump_cluster_stats

Reviewed-by: Kefu Chai <kchai@redhat.com>

diff --cc src/pybind/mgr/prometheus/module.py
Simple merge