Fill in the _tags dict from the tags file.

        Args:
            None

        Returns:
            True

        Todo:
            Figure what could go wrong and at least acknowledge the
            the fact that Murphy was an optimist.

def _read_tags(self):
        """
        Fill in the _tags dict from the tags file.

        Args:
            None

        Returns:
            True

        Todo:
            Figure what could go wrong and at least acknowledge the
            the fact that Murphy was an optimist.
        """
        tags = self._config.get('tags', {})
        logging.info('Tags:')
        for tag_name in tags.keys():
            tag = {}
            tag['Key'] = tag_name
            tag['Value'] = tags[tag_name]
            self._tags.append(tag)
            logging.info('{} = {}'.format(tag_name, tags[tag_name]))

        logging.debug(json.dumps(
            self._tags,
            indent=2,
            sort_keys=True
        ))
        return True