When using deploy_s3, the update_function and create_function functions take use_s3 as *args and s3_file as **kwargs, which causes the s3_file to be empty and use_s3 to equal (True, <s3_file>), which then causes the deployment to fail because the S3Key value submitted to AWS is just {}.

This PR fixes it so that those arguments are properly passed and deployment goes through.