Merge PR #22343 into master

Merge PR #22343 into master

* refs/pull/22343/head:
	qa/standalone remove ceph-disk from activate_osd helper
	cmake: remove subman.sh tests
	test remove ceph-disk directory
	debian: remove ceph_detect_init python files from base
	qa/standalone remove virtualenv paths for ceph-disk and ceph-detect-init
	debian: remove ceph-disk ceph-detect-init python files
	rpm: remove ceph-disk ceph-detect-init python files
	alpine: remove ceph-disk ceph-detect-init python files
	alpine: remove ceph-osd and parttypeuuid udev rules
	debian: remove ceph-osd and parttypeuuid udev rules
	rpm: remove ceph-osd and parttypeuuid udev rules
	ceph-helpers.sh: remove ceph-disk, set up osds directly
	CMakeLists.txt: add back CEPH_BUILD_VIRTUALENV
	alpine: remove ceph-disk, add ceph-volume in APKBUILD.in
	upstart: remove ceph-disk activation call
	doc/install add anchor for manual osd deployment in freebsd guide
	doc/dev remove ceph-disk from freebsd guide, link to manual reference
	doc/dev/config-key remove ceph-disk references
	doc/dev remove ceph-disk.rst
	doc/dev: change ceph-disk suite examples for ceph-deploy
	doc/man_index: remove ceph-disk, ceph-detect-init refs
	doc/install: remove ceph-disk from freebsd examples
	doc/rados remove ceph-disk from man references
	doc/man remove ceph-disk ref from ceph-volume-systemd
	doc/man: update reference from ceph-disk to ceph-volume
	doc/man: remove ceph-disk, ceph-detect-init from cmake
	doc/man/ceph-volume remove doc reference to ceph-disk
	doc/man: remove ceph-disk, ceph-detect-init
	qa/suites: remove ceph-disk
	qa/run-standalone.sh: remove requirement for ceph-detect-init virtualenv
	qa/workunits: remove ceph-detect-init from rbdmapfile test
	qa/workunits: remove ceph-detect-init from ceph-helpers-root.sh
	qa/workunits: remove ceph-disk
	build: remove ceph-disk from freebsd script
	cmake: remove ceph-disk, ceph-detect-init tox tests
	init-ceph: remove ceph-disk
	cmake: remove top-level entries for ceph-disk, ceph-detect-init
	debian: remove ceph-detect-init references
	debian: remove ceph-disk references
	src: remove ceph-detect-init tool
	rpm: remove ceph-disk, ceph-detect-init from spec file
	test: remove subman script
	script: remove subman script
	udev: remove parttypeuuid rules for ceph-disk
	tool remove ceph-disk from ps-ceph.pl
	upstart: remove ceph-disk conf file
	systemd: remove ceph-disk from CMakeLists
	systemd: remove ceph-disk service
	udev: remove ceph-disk rules
	src: remove ceph-disk tool