Merge pull request #9175 from majianpeng/bluestore-sync-wal-apply

os/bluestore: If using sync_wal_apply, no need start wal_tp thread.

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

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

diff --cc src/os/bluestore/BlueStore.cc
Simple merge

diff --cc src/os/bluestore/BlueStore.h
Simple merge