YaST2 DNS server component specification

Author: Jiri Srain <jsrain@suse.cz>

Features
========

- Global options setting ("options" section of /etc/named.conf file)
- Options of other sections of /etc/named.conf files setting (eg. logging)
  - not currently implemented - TODO
- Zones (both master (primary) and slave (secondary), normal and reverse)
  setting, also stub zones setting is possible
- For every zone:
  - $TTL record
  - SOA record
  - NS, MX, A, PTR and CNAME records (only those that are relevant for
    appropriate zone type)
- Log viewing


