host_vars: Add the vars for aur.archlinux.org and change the README

Added the missing host_vars file for aur.archlinux.org and changed the README
to reflect it's move.

README.md

@@ -159,7 +159,6 @@ The following steps should be used to update our managed servers:
 
 #### Services
 
-  - aur (aur.archlinux.org)
   - mailman
   - projects (projects.archlinux.org)
 
@@ -167,10 +166,14 @@ The following steps should be used to update our managed servers:
 
 #### Services
   - wiki (wiki.archlinux.org)
-  - bugs (bugs.archlinux.org)
   - archweb
   - patchwork
 
+## aur.archlinux.org
+
+#### Services
+  - aurweb
+
 ## bugs.archlinux.org
 
 #### Services

host_vars/aur.archlinux.org

+---
+filesystem: btrfs
+zabbix_agent_templates:
+  - Template OS Linux
+  - Template App Borg Backup
+  - Template App HTTP Service
+  - Template App HTTPS Service
+  - Template App MySQL
+  - Template App Nginx
+
+fail2ban_jails:
+  sshd: true
+  postfix: false
+  dovecot: false