Merge pull request #4649 from aws/staging/5cd9fb66-4308-4208-916b-a8a…

…f4cc0c621

Pull request: release <- staging/5cd9fb66-4308-4208-916b-a8af4cc0c621

Merge pull request #4643 from aws/staging/98951260-90e5-48f0-a9da-12f…

…c424bc8c0

Pull request: release <- staging/98951260-90e5-48f0-a9da-12fc424bc8c0

Merge pull request #4638 from aws/staging/255c4cad-a16c-4126-9089-eb2…

…51ce33854

Pull request: release <- staging/255c4cad-a16c-4126-9089-eb251ce33854

Merge pull request #4634 from aws/staging/014af1ca-2db9-4eff-a4c6-557…

…1acde3438

Pull request: release <- staging/014af1ca-2db9-4eff-a4c6-5571acde3438

Merge pull request #4630 from aws/staging/eba07048-8b7a-4071-9096-04d…

…63fba4302

Pull request: release <- staging/eba07048-8b7a-4071-9096-04d63fba4302

Merge pull request #4626 from aws/staging/49272c2a-f7f4-4b28-ad53-bd9…

…85727d4ae

Pull request: release <- staging/49272c2a-f7f4-4b28-ad53-bd985727d4ae

Merge pull request #4622 from aws/staging/e9c14171-f4db-48a5-8c1d-843…

…bf3b64162

Pull request: release <- staging/e9c14171-f4db-48a5-8c1d-843bf3b64162

Merge pull request #4619 from aws/staging/6ab4cd3f-8573-4b51-9e04-ef7…

…789a6c0eb

Pull request: release <- staging/6ab4cd3f-8573-4b51-9e04-ef7789a6c0eb

Merge pull request #4616 from aws/dongie/remove-elastictranscoder

Remove Elastic Transcoder

Merge pull request #4612 from aws/zoewang/backfill6641

Fixed the issue where S3 multipart client failed to download zero-bye file, causing Content range header is missing to throw.