Merge pull request #21154 from mslovy/rgw-admin-api

rgw:  update op_mask of user via admin rest api

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

diff --cc doc/radosgw/adminops.rst
Simple merge

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

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

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