Merge PR #24102 into master

* refs/pull/24102/head:
	global: fix err_to_stderr can't work when it was configured to false
	osd: replace cout/derr with dout(0) to avoid writing trivial logs to syslog file

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

diff --cc src/ceph_osd.cc
Simple merge

diff --cc src/global/global_init.cc
Simple merge

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