Merge pull request #4224 from rzarzynski/wip-10682_bucketlisting

rgw: add support for end_marker parameter for GET on Swift container.

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

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

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

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

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