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_teacherlaptop/files/mountserver

@@ -0,0 +1,26 @@
+#!/usr/bin/bash
+set -eu
+
+exit_script() {
+    echo "unmounting media - terminated by trap!" >> "/tmp/${SUDO_UID}-exit-mount.log"
+    findmnt "/lmn/media/${SUDO_USER}/share" && umount "/lmn/media/${SUDO_USER}/share"
+    findmnt "/srv/samba/schools/default-school" && umount "/srv/samba/schools/default-school"
+    trap - SIGHUP SIGINT SIGTERM # clear the trap
+    kill -- -$$ # Sends SIGTERM to child/sub processes
+}
+
+findmnt /srv/samba/schools/default-school > /dev/null && exit 0
+
+umask 0002
+mkdir -p /srv/samba/schools/default-school
+chmod 777  /srv/samba/schools/default-school
+mkdir -p "/lmn/media/${SUDO_USER}/share"
+
+mount -t cifs //server/default-school/ /srv/samba/schools/default-school \
+      -o "sec=krb5i,cruid=${SUDO_UID},user=${SUDO_USER},uid=${SUDO_UID},gid=1010,file_mode=0770,dir_mode=0770,mfsymlinks,nobrl,actimeo=600,cache=loose,echo_interval=10"
+mount --bind /srv/samba/schools/default-school/share "/lmn/media/${SUDO_USER}/share"
+
+echo "Einbindung erfolgreich!"
+echo "Dieses Fenster bitte nicht schließen!"
+trap exit_script SIGHUP SIGINT SIGTERM
+sleep infinity