Use ansible_facts to access facts.

Author: felixfontein

changelogs/fragments/113-facts.yml

@@ -0,0 +1,2 @@
+bugfixes:
+  - "Avoid using ``ansible_date_time`` instead of ``ansible_facts.date_time`` (https://github.com/felixfontein/ansible-acme/pull/113)."

roles/acme_certificate/tasks/main.yml

@@ -40,7 +40,7 @@
       {{ [
         acme_certificate_keys_old_path,
         (
-          (ansible_date_time.date ~ '-' ~ ansible_date_time.hour ~ ansible_date_time.minute ~ ansible_date_time.second ~ '-')
+          (ansible_facts.date_time.date ~ '-' ~ ansible_facts.date_time.hour ~ ansible_facts.date_time.minute ~ ansible_facts.date_time.second ~ '-')
           if acme_certificate_keys_old_prepend_timestamp else ''
         ) ~ acme_certificate_key_name
       ] | ansible.builtin.path_join }}