Merge PR #27595 into master

* refs/pull/27595/head:
	osd: add 'ceph osd stop <osd.nnn>' command

Reviewed-by: Sage Weil <sage@redhat.com>

diff --cc qa/standalone/osd/osd-markdown.sh
Simple merge

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

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

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

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