def METHOD_NAME(parser):
    """
    Standard pytest hook to add options to the pytest parser.
    :param parser: current pytest parser that will be used on the CLI
    """
    parser.addoption('--acme-server', default='pebble',
                     choices=['boulder-v2', 'pebble'],
                     help='select the ACME server to use (boulder-v2, pebble), '
                          'defaulting to pebble')
    parser.addoption('--dns-server', default='challtestsrv',
                     choices=['bind', 'challtestsrv'],
                     help='select the DNS server to use (bind, challtestsrv), '
                          'defaulting to challtestsrv')