libravatar: drop certbot role, do the config manually

roles/libravatar/tasks/main.yml

@@ -20,17 +20,13 @@
   - "policycoreutils-python"
   - "postfix"
   - "mod_ssl"
+  - "letsencrypt"
 
 - lineinfile:
   path: /etc/postfix/main.cf
   state: absent
   regexp: '^relayhost = bastion.phx2.fedoraproject.org'
 
-- name: letsencrypt cert
-  include_role: name=certbot
-  tags:
-  - config
-
 - git:
     repo: https://git.linux-kernel.at/oliver/ivatar.git
     dest: /srv/libravatar