add aliases in maintenance script

debian/scripts/iobroker_startup.sh

@@ -290,7 +290,7 @@ fi
 
 # extended debug output
 if [[ "$debug" == "true" ]]; then
-  echo "[DEBUG] Some more ioBroker debug information"
+  echo "[DEBUG] Collecting some more ioBroker debug information..."
   echo ' '
   # get information and send to array
   IFS=$'\n'

debian/scripts/maintenance.sh

@@ -227,7 +227,7 @@ for arg in "$@"; do
     help|-h|--help)
       run=(display_help)
       ;;
-    status)
+    status|stat|s)
       run=(maintenance_status)
       ;;
     on)
@@ -236,10 +236,10 @@ for arg in "$@"; do
     off)
       run=(disable_maintenance)
       ;;
-    upgrade)
+    upgrade|upgr|u)
       run=(upgrade_jscontroller)
       ;;
-    restart)
+    restart|rest|r)
       run=(restart_container)
       ;;
     -y|--yes)