fix(module): adding missing variable to virtualMachine

modules/virtualMachine/variables.tf

@@ -100,5 +100,10 @@ variable "graphics" {
     listen = "0.0.0.0"
     type = "VNC"
   }
-  
+}
+
+variable "imagemode" {
+  description = "Disk image mode"
+  type = string
+  default = "0600"
 }