Merge PR #29052 into master

* refs/pull/29052/head:
	common/ceph_time: make operator<< for timespan less useless
	include/encoding: fix encode/decode for signed durations
	osd/osd_types: make pg_history_t operator<< more concise
	osd: do not rebind heartbeat messengers on wrongly marked down
	ceph_test_osd_stale_read: add StaleRead test
	osd/PeeringState: restructure init_primary_up_acting a bit
	msg/async: add ms_blackhole_$type options

Reviewed-by: Samuel Just <sjust@redhat.com>

diff --cc src/common/legacy_config_opts.h
Simple merge

diff --cc src/common/options.cc
Simple merge

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