remove local users group created by jessie

ad-auth/tasks/main.yml

@@ -11,3 +11,9 @@
 - meta: flush_handlers
 - include: sudo.yml
 - meta: flush_handlers
+
+- name: ensure there is no local users group
+  lineinfile: dest=/etc/group state=absent line="users:x:100:"
+  tags:
+    - groups
+    - config