Fix regexp for gdm autologin user to not overlap with auto login enabled flag.

Author: DOMjudge @ NWERC 2021

icpc-wf/ansible/roles/domjudge_user/tasks/main.yml

@@ -47,7 +47,7 @@
 - name: Automatically login domjudge user
   lineinfile:
     path: /etc/gdm3/custom.conf
-    regexp: 'AutomaticLogin'
+    regexp: 'AutomaticLogin='
     line: 'AutomaticLogin=domjudge'
   notify: restart gdm