Merge pull request #7014 from efirs/ef_replace_coll_t_by_const_coll_t_ref

osd: reduce CPU usage by replacing coll_t by const coll_t&

Reviewed-by: Haomai Wang <haomai@xsky.com>
Reviewed-by: Sage Weil <sage@redhat.com>

diff --cc src/os/ObjectStore.h
Simple merge

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

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

diff --cc src/os/filestore/FileStore.cc
Simple merge

diff --cc src/os/filestore/FileStore.h
Simple merge

diff --cc src/os/kstore/KStore.cc
Simple merge

diff --cc src/os/kstore/KStore.h
Simple merge

diff --cc src/os/memstore/MemStore.cc
Simple merge

diff --cc src/os/memstore/MemStore.h
Simple merge