Fix pass through adapter when using minio (s3)

[cjcolvar]

A couple of changes were needed to make the pass through adapter usable with minio inside avalon:

• Convert s3 url to a presigned http url for use in mediainfo
• Use the download_file method supplied by aws-sdk-s3 for transferring derivative to working directory

[cjcolvar]

I created https://github.com/samvera-labs/active_encode/issues/133 to cycle back to creating these tests later.