When adding a zone using the option name_from_ip, the user have
little control over the final name of the zone, and if this name
is to be used in further processing in a playbook it might lead to
errors if the inferred name does not match what the user wanted to.
By returning the actual inferred zone name, the name can be safely
used for other tasks in the playbook.
IPA CLI has an option `name_from_ip` that provide a name for a zone
from the reverse IP address, so that it can be used to, for example,
manage PTR DNS records.
This patch adds a similar attribute to ipadnszone module, where it
will try to find the proper zone name, using DNS resolve, or provide
a sane default, if a the zone name cannot be resolved.
The option `name_from_ip` must be used instead of `name` in playbooks,
and it is a string, and not a list.
A new example playbook was added:
playbooks/dnszone/dnszone-reverse-from-ip.yml
A new test playbook was added:
tests/dnszone/test_dnszone_name_from_ip.yml
