Extraction Lambda write_seq_id function

[millipz]

        To parameter store write table_name : sequential_id key value pair
        -- checks sequential_id is one greater than previous sequential_id

        Args:
            table_name (string)
            sequential_id(int)

        Raises:
            KeyError: table_name does not exist
            ConnectionError : connection issue to parameter store

        Returns:
            None