Use absolute domain in detection of A/AAAA records
    
    Python dns resolver append configured domain to queries which may lead
    to false positive answer.
    
    Exmaple: resolving "ipa.example.com" may return records for
    "ipa.example.com.example.com" if domain is configured as "example.com"
    
    https://fedorahosted.org/freeipa/ticket/5421
    
    Reviewed-By: Petr Spacek <pspacek@redhat.com>