fix(ups): upssched-cmd invoca shutdown-ul prin sudo

Sincronizeaza in git modificarea deja aplicata pe pvemini. upssched ruleaza ca
user `nut`; fara sudo, scriptul de shutdown nu poate face nimic.

Copia din repo e acum identica cu /usr/local/bin/upssched-cmd de pe pvemini.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RRyaDj39hPQ89SZS6URRpS

proxmox/cluster/ups/scripts/upssched-cmd

@@ -352,7 +352,7 @@ case $1 in
             "Pornire shutdown orchestrat cluster" \
             "Toate nodurile se vor opri in ordine"
 
-        /usr/local/bin/ups-shutdown-cluster.sh &
+        sudo /usr/local/bin/ups-shutdown-cluster.sh &
         ;;
 
     online)
@@ -410,7 +410,7 @@ case $1 in
             "Shutdown imediat cluster" \
             "Sistemele se opresc ACUM"
 
-        /usr/local/bin/ups-shutdown-cluster.sh &
+        sudo /usr/local/bin/ups-shutdown-cluster.sh &
         ;;
 
     commbad)