Improve certificates

Add msrg.cc domain for xmpp on wiuwiu.de
Add sourcing of service.env

roles/lego/tasks/systemd.yml

@@ -11,13 +11,14 @@
     dest: /etc/systemd/system/lego@.timer
     mode: "0644"
   become: true
-- name: Enable the system timer for {{ item }}
+- name: Enable the system timers
   ansible.builtin.systemd_service:
     name: lego@{{ item }}.timer
     state: started
     enabled: true
     daemon_reload: true
   loop:
+    - msrg.cc
     - db.serguzim.me
     - registry.serguzim.me
   become: true