Merge pull request #9484 from jmunhoz/aws4-streaming

rgw: aws4: add STREAMING-AWS4-HMAC-SHA256-PAYLOAD support

verified (by hand)

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

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

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

diff --cc src/rgw/rgw_rest_s3.cc
Simple merge

diff --cc src/rgw/rgw_rest_s3.h
Simple merge