Make enabling cloud_init optionnal

For cloud images that needs it, cloud_init can be enabled in the main.tf file. This change will allow deployments that does not require cloud_init to be supported

multiple/shared_modules/domain.tf

@@ -3,7 +3,9 @@ resource "libvirt_domain" "domain" {
   name   = "${var.vm_name}-${count.index}"
   memory = var.memory
   vcpu   = var.vcpu
-  cloudinit = libvirt_cloudinit_disk.commoninit.id
+
+  # Only include cloudinit if enabled
+  cloudinit = var.enable_cloudinit ? libvirt_cloudinit_disk.commoninit[count.index].id : null
 
   # ---- optional UEFI support ------------------------------------
   # Firmware – only add the string when a path is supplied