refactored to timer routine

roles/cleanup-failed-docker-backups/tasks/main.yml

@@ -19,13 +19,16 @@
   notify: reload cleanup-failed-docker-backups.service daemon
   when: run_once_cleanup_failed_docker_backups is not defined
 
-- name: create cleanup-failed-docker-backups.timer
-  template:
-    src: cleanup-failed-docker-backups.timer.j2
-    dest: /etc/systemd/system/cleanup-failed-docker-backups.timer
-  register: cleanup_failed_docker_backups_timer
-  changed_when: cleanup_failed_docker_backups_timer.changed or activate_all_timers | bool
-  notify: restart cleanup-failed-docker-backups.timer
+- name: set service_name to the name of the current role
+  set_fact:
+    service_name: "{{ role_name }}"
+  when: run_once_cleanup_failed_docker_backups is not defined
+
+- name: "include role for systemd-timer for {{service_name}}"
+  include_role:
+    name: systemd-timer
+  vars:
+    on_calendar:  "{{on_calendar_cleanup_failed_docker}}"
   when: run_once_cleanup_failed_docker_backups is not defined
 
 - name: run the cleanup_failed_docker_backups tasks once