add barebones knot config

This configuration does not yet do much but it provisions a knot
server that runs.

playbooks/deploy.yaml

@@ -101,3 +101,8 @@
 
 - name: Run ensure_eh22_styleguide_dir Playbook
   ansible.builtin.import_playbook: ensure_eh22_styleguide_dir.yaml
+
+- name: Setup authoritative dns servers
+  hosts: auth-dns
+  roles:
+    - auth-dns