Introduction of a new device class (teacherlaptop).

- Wifi-devices will be managed by NetworkManager
 - (USB-)Dockingstation with same MAC as internal device
   will be assigned to virbr1
 - users with role-teacher have privilege
   - to create new NetworkManager connections
   - install additional software
   - change luks-key
 - package plasma-discover will not be removed (for teacherlaptops)
 - http-proxy-Settings will be configured by auto-detect
 - providing sudo-script to mount default-school from server after
   wireguard-connection is established

roles/lmn_network/tasks/main.yml

@@ -7,6 +7,15 @@
       https_proxy="{{ proxy }}"
       ftp_proxy="{{ proxy }}"
       no_proxy="{{ no_proxy }}"
+  when: not (groups.teacherlaptop is defined and inventory_hostname in groups.teacherlaptop)
+
+- name: Set chromium proxy-policy to auto_detect
+  copy:
+    dest: /etc/chromium/policies/managed/proxy.json
+    content: |
+      {
+        "ProxyMode": "auto_detect"
+      }
 
 - name: Set aptcache
   ansible.builtin.copy: