Merge pull request #915 from ceph/wip-rgw-expose-bucket

6748: rgw: Optionally return the bucket name in a response header.

Reviewed-by: Yehuda Sadeh <yehuda@inktank.com>

diff --cc src/common/config_opts.h
Simple merge

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

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