refactor ♻️: Refactor Proxmox repo management tasks, add comments, and ensure apt update is triggered on changes.

This commit refactors the Proxmox repository management tasks by adding necessary comments for better understanding. It also ensures that `apt update` is triggered whenever there are changes to the repository configuration.

templates/logrotate-pve.j2

@@ -1,13 +0,0 @@
-/var/log/pve/*.log /var/log/pve/tasks/*.log {
-    daily
-    rotate {{ proxmox_logrotate_rotate }}
-    compress
-    missingok
-    notifempty
-    maxsize {{ proxmox_logrotate_maxsize }}
-    create 0640 root adm
-    sharedscripts
-    postrotate
-        systemctl reload rsyslog >/dev/null 2>&1 || true
-    endscript
-}