修复 otg 无法使用问题

configs/kvmd/clean_when_exit.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+cleanup() {
+    if [ "$OTG" == "1" ]; then
+        echo "Trying exit OTG Port..."
+        python -m kvmd.apps.otg stop
+    fi
+    exit 0
+}
+
+trap cleanup SIGTERM
+
+while true; do
+    sleep 3600
+done