Merge pull request #44538 from dang/wip-dang-zipper-perf

RGW Zipper - don't load stats for every bucket load

Reviewed-by: Mark Nelson <mnelson@redhat.com>
Reviewed-by: Casey Bodley <cbodley@redhat.com>

diff --cc src/rgw/rgw_op.cc
Simple merge

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

diff --cc src/rgw/rgw_sal_dbstore.cc
Simple merge

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

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

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