Returns a triplestore connection

        args:
            attr_name: The name the connection will be assigned in the
                config manager
            params: The paramaters of the connection

        kwargs:
            log_level: logging level to use

def make_tstore_conn(params, **kwargs):
    """ Returns a triplestore connection

        args:
            attr_name: The name the connection will be assigned in the
                config manager
            params: The paramaters of the connection

        kwargs:
            log_level: logging level to use
    """
    log.setLevel(params.get('log_level', __LOG_LEVEL__))
    log.debug("\n%s", params)
    params.update(kwargs)
    try:
        vendor = RdfwConnections['triplestore'][params.get('vendor')]
    except KeyError:
        vendor = RdfwConnections['triplestore']['blazegraph']
    conn = vendor(**params)
    return conn