chore(e2e): Use public version of enos (#4872)

* chore(e2e): Use public version of enos

* chore(e2e): Move vault module to this repo

terraform-enos-aws-vault is no longer supported

enos/modules/aws_boundary/main.tf

@@ -6,7 +6,7 @@ terraform {
 
   required_providers {
     enos = {
-      source  = "app.terraform.io/hashicorp-qti/enos"
+      source  = "registry.terraform.io/hashicorp-forge/enos"
       version = ">= 0.3.25"
     }
   }