Encode request into client_message

def encode_request(timeout, durability, transaction_type, thread_id):
    """ Encode request into client_message"""
    client_message = ClientMessage(payload_size=calculate_size(timeout, durability, transaction_type, thread_id))
    client_message.set_message_type(REQUEST_TYPE)
    client_message.set_retryable(RETRYABLE)
    client_message.append_long(timeout)
    client_message.append_int(durability)
    client_message.append_int(transaction_type)
    client_message.append_long(thread_id)
    client_message.update_frame_length()
    return client_message