eh22-wiki: setup EH22 wiki using Ansible by copying and mod. wiki config

Also introduce wiki_hosts group for applying dokuwiki role to multiple
hosts.

inventories/chaosknoten/host_vars/eh22-wiki.yaml

@@ -0,0 +1,11 @@
+nginx__version_spec: ""
+nginx__configurations:
+  - name: eh22.easterhegg.eu
+    content: "{{ lookup('ansible.builtin.file', 'resources/chaosknoten/eh22-wiki/nginx/eh22.easterhegg.eu.conf') }}"
+
+certbot__version_spec: ""
+certbot__acme_account_email_address: j+letsencrypt-ccchh@jsts.xyz
+certbot__certificate_domains:
+  - "eh22.easterhegg.eu"
+certbot__new_cert_commands:
+  - "systemctl reload nginx.service"