Create an API for uploading a model to BucketFS equivalent to the CLI upload_model.

[ahsimb]

At the moment the way to invoke this functionality programmatically is calling three functions like this :

# Create bucketfs location
bucketfs_location = create_bucketfs_location(bfs_service, host_name, bfs_port, bfs_use_https, bfs_user, bfs_password,
    bfs_bucket, bfs_dir)
# Upload the downloaded model files into bucketfs
upload_path = get_model_path(bfs_model_dir, model_name)
upload_model_files_to_bucketfs(model_dir, upload_path, bucketfs_location)

It would be good to combine this into a single call.