Merge pull request #46378 from pritha-srivastava/wip-rgw-sts-modify-session-duration

rgw/sts: modify max_session_duration using update role REST API/ radosgw-admin command.

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

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

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