add ssl-cert group for mumble-server user

tasks/murmur.yml

@@ -4,6 +4,16 @@
     state: present
   register: murmur_installed
 
+- name: Append ssl-cert group to {{ murmur_owner }} user
+  user:
+    name: "{{ murmur_owner }}"
+    state: present
+    groups:
+    - "{{ acme_ssl_group }}"
+    append: yes
+    system: yes
+  notify: restart murmur
+
 - name: Copy Murmur config file
   template:
     src: mumble-server.ini.j2