Merge pull request #4568 from dachary/wip-10662-10663-hammer

RGW swift API: Response header of COPY request for object does not

contain x-copied-from, custom metadata, x-copied-from-last-modified, X-Copied-From-Account headers

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

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

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

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

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

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

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