Return zone id which name is closer matched with domain name.

def get_best_match_zone(all_zones, domain):
        """Return zone id which name is closer matched with domain name."""

        # Related: https://github.com/Miserlou/Zappa/issues/459
        public_zones = [zone for zone in all_zones['HostedZones'] if not zone['Config']['PrivateZone']]

        zones = {zone['Name'][:-1]: zone['Id'] for zone in public_zones if zone['Name'][:-1] in domain}
        if zones:
            keys = max(zones.keys(), key=lambda a: len(a))  # get longest key -- best match.
            return zones[keys]
        else:
            return None