* Allow _acme-challenge as a zone
Like described here:
https://github.com/lukas2511/dehydrated/wiki/example-dns-01-nsupdate-script
Not using this patch may be an issue if the parent zone has been (where a wildcard certificate has been requested.) signed by DNSSEC.
Please consider this also for inclusion before dns-01 will be allowed for wildcards.
* Update dns_rfc2136.py
forgot one domain_name reference
* Update dns_rfc2136.py
moved domain up & added assignment.
* Update dns_rfc2136_test.py
tests adjusted to new calls.
* Update dns_rfc2136_test.py
Forgot on DOMAIN...
* Update dns_rfc2136_test.py
* Update dns_rfc2136.py
pydoc updates.
* Update dns_rfc2136.py
