Merge pull request #60670 from cbodley/wip-cls-rgw-shard-io

rgw/rados: add async algorithms for concurrent index operations

Reviewed-by: Adam Emerson <aemerson@redhat.com>

diff --cc src/rgw/driver/rados/rgw_bucket.cc
Simple merge

diff --cc src/rgw/driver/rados/rgw_bucket.h
Simple merge

diff --cc src/rgw/driver/rados/rgw_rados.cc
Simple merge

diff --cc src/rgw/driver/rados/rgw_rados.h
Simple merge

diff --cc src/rgw/driver/rados/rgw_sal_rados.cc
Simple merge

diff --cc src/rgw/driver/rados/rgw_trim_bilog.cc
Simple merge

diff --cc src/rgw/radosgw-admin/radosgw-admin.cc
Simple merge

diff --cc src/rgw/rgw_sal.h
Simple merge