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/aws_boundary/variables.tf

@@ -334,6 +334,12 @@ variable "alb_sg_additional_ips" {
   default     = []
 }
 
+variable "alb_sg_additional_ipv6_ips" {
+  description = "Additional ipv6 IPs to be allowed (ingress) on an ALB Security Group"
+  type        = list(string)
+  default     = []
+}
+
 variable "boundary_license" {
   description = "Boundary license (not needed for OSS, required for enterprise)"
   type        = string
@@ -378,3 +384,26 @@ variable "hcp_boundary_cluster_id" {
   // If using HCP int, ensure that the cluster id starts with "int-"
   // Example: "int-19283a-123123-..."
 }
+
+variable "ip_version" {
+  description = "ip version used to setup boundary instance, should be 4, 6, or dual"
+  type        = string
+  default     = "4"
+
+  validation {
+    condition     = contains(["4", "6", "dual"], var.ip_version)
+    error_message = "ip_version must be one of: [4, 6, dual]"
+  }
+}
+
+variable "vault_address" {
+  description = "network address to a vault instance"
+  type        = string
+  default     = "localhost"
+}
+
+variable "vault_transit_token" {
+  description = "vault token used for kms transit in the boundary config"
+  type        = string
+  default     = ""
+}