Extract comma-separated values from a csf.conf
    option and return a list.

def _csf_to_list(option):
    '''
    Extract comma-separated values from a csf.conf
    option and return a list.
    '''
    result = []
    line = get_option(option)
    if line:
        csv = line.split('=')[1].replace(' ', '').replace('"', '')
        result = csv.split(',')
    return result