feat: add unkin.net domain (#347)

- manage the unkin.net domain
- ensure forwarding for unkin.net
- split domain from cname list and set zone correctly
- add fafflix to cnames list for haproxy2

Reviewed-on: #347

site/profiles/templates/base/hosts.erb

@@ -4,7 +4,6 @@
 <%= @facts['networking']['ip'] %> <%= @fqdn %> <%= @hostname %>
 127.0.0.1 localhost.localdomain localhost
 127.0.0.1 localhost4.localdomain4 localhost4
-198.18.19.17 git.unkin.net
 
 <% @additional_hosts.each do |host| -%>
 <%= host['ip'] %>  <%= host['hostname'] %>  <%= host['aliases'].join(' ') if host['aliases'] %>