def upload_block_blob(endpoint, content, content_length):
return do_ams_sto_put(endpoint, content, content_length)<EOL>
AUX (quick and dirty) Function to upload a block Blob..

    Args:
        access_token (str): A valid Azure authentication token.
        endpoint (str): A Media Service Endpoint.
        content (str): A Content.
        content_length (str): A Content Length.

    Returns:
        HTTP response. JSON body.