Return a pycassa system manager connection object

def _sys_mgr():
    '''
    Return a pycassa system manager connection object
    '''
    thrift_port = six.text_type(__salt__['config.option']('cassandra.THRIFT_PORT'))
    host = __salt__['config.option']('cassandra.host')
    return SystemManager('{0}:{1}'.format(host, thrift_port))