change file_handle_to_s3 solid to use S3.Client.upload_fileobj
Summary: Adds upload_fileobj method to the S3 resource and changes the file_handle_to_s3 solid to use it instead of put_object.
- Ran unittest (while removing a defunct one)
- Hooked up to an actual pipeline uploading to a real S3 bucket (with creds).
- Ran the airline demo warehouse pipeline.
Reviewers: #ft, alangenfeld
Reviewed By: #ft, alangenfeld
Differential Revision: https://dagster.phacility.com/D784