Allow teachers to install printers on teacherlaptops.

roles/lmn_printer/tasks/main.yml

@@ -32,6 +32,14 @@
     - "/"
     - "/admin"
 
+- name: Allow group role-teacher to manage printers
+  lineinfile:
+    dest: /etc/cups/cups-files.conf
+    line: 'SystemGroup root lpadmin role-teacher'
+    regexp: '^SystemGroup'
+    state: present
+  when: groups.teacherlaptop is defined and inventory_hostname in groups.teacherlaptop
+
 - name: Disable cups-browsed
   ansible.builtin.systemd:
     name: cups-browsed.service