* Add role that allows access to powerdns api for certian ips via reverse proxy
* Remove unneeded variables, remove systemd handlers.
* Allow a list of access ips. Make this mandatory.
* Add playbook dns to manage internal dns master servers
* Add role to manage PowerDNS Admin Web Frontend for PowerDNS
* Move dns zone related data from mesh list to a simpler dict with a simple zone list
* Update role service-bind-slave
* Update Readme.md
* Add requirements.yml
* Update .gitignore