fix(module): correct default value for imagemode

modules/virtualMachine/locals.tf

@@ -0,0 +1,6 @@
+locals {
+   fqdn = "${var.vm_shortname}.${var.vm_domain}"
+   system_image_name = "system.${local.fqdn}"
+   system_image_source = var.system_image_source
+   data_image_name = "data.${local.fqdn}"
+}

modules/virtualMachine/variables.tf

@@ -92,5 +92,5 @@ variable "graphics" {
 variable "imagemode" {
   description = "Disk image mode"
   type = string
-  default = "0600"
+  default = "600"
 }