Automatically remove any surviving kumilocks on startup

manager/apps.py

@@ -1,8 +1,17 @@
 from django.apps import AppConfig
 
+import glob
+import os
+
 class ManagerConfig(AppConfig):
     name = 'manager'
     verbose_name = 'VPN360 Management'
 
     def ready(self):
         from .logger import logger
+
+        for device in glob.glob("/opt/vpnmanager/imagebuilder/*"):
+            try:
+                os.remove(device + "/.kumilock")
+            except:
+                pass