s3-tests

Merge pull request #720 from nbalacha/wip-nbalacha-74322

rgw/bucket-logging: set retain date to the future

Merge pull request #704 from sungjoon-koh/wip-part-cksum

Merge pull request #699 from sungjoon-koh/wip-s3-part-get-etag

Merge pull request #710 from nbalacha/wip-nbalacha-71365