Add STS auth, auth profiles, and the default auth chain to AWS S3 endpoints

[theronl]

Proposed changes:

• Replace static auth for AWS S3 with an auth chain credentials provider
• Add enabling STS tokens to the job request XML
• Add profiles to the job request XML
• Add the default credentials chain to the job request XML
• Update the payload assertions to allow credentials to be omitted when the default chain is enabled
• Update the payload assertions to not require credentials when a profile name is selected
• Update the payload assertions to require key and secret when the session token is submitted

• Added unit tests to validate added functionality and assertions

  @MarkHe1222 @twincitiesguy

DCL-972

[twincitiesguy]

attempting to merge this across remotes