def normalize_domain(mydomain):
    """
    Nextdoor-nomalize the passed domainname.

    Args:
      mydomain (str): the domainname to normalize

    Returns: a normalized hostname as a string
    """
    return utils.normalize_hostname_to_rfc(mydomain)
def normalize_hostname(myservername, myinstanceid):
    """
    Generate Nextdoor-normalized hostname w/ embedded Amazon instance ID.

    Args:
      myservername (str): the servername minus the instance ID
      myinstanceid (str): the Amazon instand ID

    Returns: string with normalized Nextdoor-legit hostname
    """
    myinstanceid = re.sub('[-]+', '', myinstanceid)
    return re.sub('\.', '', utils.normalize_hostname_to_rfc("{}-{}".format(myservername, myinstanceid)))