ansible-pull(role): deploy failure notify service using the copy loop

Deploy the ansible-pull-failure-notify.service using the loop using
ansible.builtin.copy as it doesn't have any template logic.

roles/ansible_pull/files/ansible-pull-failure-notify.service

@@ -0,0 +1,7 @@
+[Unit]
+Description=ansible-pull failure notifier
+
+[Service]
+Type=oneshot
+ExecStart=ansible-pull-failure-notify
+User=root

roles/ansible_pull/tasks/main.yaml

@@ -75,7 +75,6 @@
   become: true
   loop:
     - ansible-pull.service
-    - ansible-pull-failure-notify.service
   notify:
     - systemd daemon reload
 
@@ -88,6 +87,7 @@
     mode: "0644"
   become: true
   loop:
+    - ansible-pull-failure-notify.service
     - ansible-pull-reboot.service
     - ansible-pull-successful-run-timestamp-exporter.service
   notify: