Merge pull request #29342 from Jeegn-Chen/wip-scrub-extended-sleep

osd: support osd_scrub_extended_sleep

Reviewed-by: David Zafman <dzafman@redhat.com>

diff --cc qa/standalone/scrub/osd-scrub-test.sh
Simple merge

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

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

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