test(e2e): Add test for vault oidc provider (#5384)

* test(e2e): Simplify vault address in docker network

* test(e2e): Add oidc test using vault

* Update enos/modules/docker_vault/main.tf

Co-authored-by: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>

---------

Co-authored-by: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>

enos/modules/test_e2e_ui/main.tf

@@ -196,8 +196,6 @@ variable "worker_tag_egress" {
 
 locals {
   aws_ssh_private_key_path = abspath(var.aws_ssh_private_key_path)
-  vault_addr               = var.vault_addr != "" ? "http://${var.vault_addr}:${var.vault_port}" : ""
-  vault_addr_internal      = var.vault_addr_internal != "" ? "http://${var.vault_addr_internal}:8200" : local.vault_addr
   aws_host_set_ips         = jsonencode(var.aws_host_set_ips)
 }
 
@@ -213,9 +211,9 @@ resource "enos_local_exec" "run_e2e_test" {
     E2E_SSH_KEY_PATH              = local.aws_ssh_private_key_path
     E2E_SSH_CA_KEY                = var.target_ca_key
     E2E_SSH_CA_KEY_PUBLIC         = var.target_ca_key_public
-    VAULT_ADDR                    = local.vault_addr
+    VAULT_ADDR                    = var.vault_addr
     VAULT_TOKEN                   = var.vault_root_token
-    E2E_VAULT_ADDR                = local.vault_addr_internal
+    E2E_VAULT_ADDR                = var.vault_addr_internal
     E2E_AWS_ACCESS_KEY_ID         = var.aws_access_key_id
     E2E_AWS_SECRET_ACCESS_KEY     = var.aws_secret_access_key
     E2E_AWS_HOST_SET_FILTER       = var.aws_host_set_filter