and avoid to display the error twice on failure.

Needed for self-hosted servers.

ACME-DNS provide credentials for each domain. Each credential is allowed to
update only its subdomain record.

For now, acme-dns does not provide a delete API service.
Its strategy is to update an existing record.
So this call isn't relevant and must be neutral.

- Support for domains longer than 3 segments (ex. 1.www.mydomain.com).
- No need for GODADDY_BASE.  Domain will be automatically determined from full RR name.
- Update to delete challenge records.

Fixed issue with deprecated function query for dns.resolver.Resolver

indentation / whitespace changes

Founded in 2009, Aliyun is a leading cloud computing and artificial intelligence technology company in China

Should probably be fixed up, I've only hacked up @dkerr64's version for acme.sh to work on my local instance. It assumes you're using curl, I didn't bother stealing acme.sh's whole library of functions.

DNS_ADD_COMMAND="~/.getssl/dns_freedns.sh add"
DNS_DEL_COMMAND="~/.getssl/dns_freedns.sh rm"

Pipe the commands to nsupdate

This adds a dot in front of the fqdn and the zone name, so the
comparison will only check against full DNS parts of the fqdn and the
zone name. This will prevent to match a fqdn against an unrelated zone
name which overlaps with the wanted zone in the naming.

Fixes #398

PUT now requires a relative domain name.
GET changed the order of name and data in the JSON.

Note: Due to the API changes, you may need to add
GODADDY_BASE to getssl.cfg.  This is a space-separated
list of base domain names (zones) in which the challenge
responses are entered.  There doesn't seem to be a way
around this that works in all cases, as the GoDaddy API
requires that the zone name be known.