Increase delay before restarting services after upgrade

func/upgrade.sh

@@ -214,7 +214,7 @@ upgrade_rebuild_users() {
 
 upgrade_restart_services() {
     echo "(*) Restarting services..."
-    sleep 3
+    sleep 5
     if [ ! -z "$MAIL_SYSTEM" ]; then
         $BIN/v-restart-mail $restart
     fi