Merge PR #31168 into master

Merge PR #31168 into master

* refs/pull/31168/head:
	ceph-daemon: try py2 import before py3
	qa/suites/rados/singleton-nomsgr/ceph-daemon: make sure python3 is installed
	qa/standalone/test_ceph_damon.sh: test with python2 and python3
	mgr/ssh: python, not python3
	ceph-daemon: python, not python3
	ceph-daemon: os.makedirs
	ceph-daemon: configparser is ConfigParser on py2
	ceph-daemon: avoid py3-isms

Reviewed-by: Sebastian Wagner <swagner@suse.com>
Reviewed-by: Alfredo Deza <adeza@redhat.com>