Merge pull request #15801 from zhangsw/feature-bucket-sync

rgw multisite: feature of bucket sync enable/disable

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

diff --cc src/cls/rgw/cls_rgw.cc
Simple merge

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

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

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

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

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

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

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

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

diff --cc src/test/cli/radosgw-admin/help.t
Simple merge