Implement time stamp and improve reporter syntax.

The directory access time used so far is modified on every
ansible run and independent of the ansible module/playbook.

lmn-client.yml

@@ -85,6 +85,10 @@
     - lmn_security
 
   tasks:
+    - name: Timestamp successfull ansible run
+      ansible.builtin.shell: date --iso-8601=seconds >> /home/ansible/.ansible/stamps
+      changed_when: False
+
 ## Temporary fixes and quirks:
     - name: Fix 8086:4909 external graphics card
       replace: