Create IPv6 and dual stack enos tests (#5212)

Co-authored-by: Danielle Miu <29378233+DanielleMiu@users.noreply.github.com>
Co-authored-by: Damian Debkowski <damian.debkowski@hashicorp.com>

enos/modules/read_license/main.tf

@@ -1,8 +1,8 @@
 # Copyright (c) HashiCorp, Inc.
 # SPDX-License-Identifier: BUSL-1.1
 
-variable "file_name" {}
+variable "license_path" {}
 
 output "license" {
-  value = file(var.file_name)
+  value = file(var.license_path)
 }