Implemented cleanup procedure for failed backups

roles/docker-volume-backup/handlers/main.yml

@@ -1,12 +1,12 @@
 - name: "reload docker-volume-backup.service"
   systemd:
     name: docker-volume-backup.service
-    state: reloaded
     enabled: yes
     daemon_reload: yes
+
 - name: "restart docker-volume-backup.timer"
   systemd:
     name: docker-volume-backup.timer
-    state: restarted
+    state: started
     enabled: yes
     daemon_reload: yes

roles/docker-volume-backup/meta/main.yml

@@ -2,3 +2,4 @@ dependencies:
   - git
   - backups-provider
   - systemd_notifier
+  - docker-volume-backup-cleanup

roles/docker-volume-backup/templates/docker-volume-backup.service.j2

@@ -1,6 +1,6 @@
 [Unit]
 Description=docker volume backup
-OnFailure=systemd-notifier@%n.service
+OnFailure=systemd-notifier@%n.service docker-volume-backup-cleanup.service
 
 [Service]
 Type=oneshot