Merge pull request #20173 from liewegas/wip-os-ch

os: unify Sequencer and CollectionHandle

Reviewed-by: Josh Durgin <jdurgin@redhat.com>

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

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

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

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

diff --cc src/test/CMakeLists.txt
Simple merge

diff --cc src/test/objectstore/store_test.cc
index 9db8a582ce96d923aaa5ebad27f34f487a381fd7,b4b35081c1a561bec113dd51757ee83c250bfbec..66a11b74c0f914bbaaf0b9569cadedded9a6201c
--- 1/src/test/objectstore/store_test.cc
--- 2/src/test/objectstore/store_test.cc
+++ b/src/test/objectstore/store_test.cc
@@@ -5763,9 -5786,9 +5786,8 @@@ void doMany4KWritesTest(boost::scoped_p
                          unsigned max_ops,
                          unsigned max_object_size,
                          unsigned max_write_size,
 -                        unsigned write_alignment,
 -                        store_statfs_t* res_stat)
 +                        unsigned write_alignment)
  {
-   ObjectStore::Sequencer osr("test");
    MixedGenerator gen(555);
    gen_type rng(time(NULL));
    coll_t cid(spg_t(pg_t(0,555), shard_id_t::NO_SHARD));