Use type for variables (#25)
When working with Terragrunt we encountered an issue with variables that have no type set and are being used in a for-each loop.
See here for the error:
│ Error: Invalid dynamic for_each value
│
│ on main.tf line 27, in resource "helm_release" "cert_manager":
│ 27: for_each = var.additional_set
│ ├────────────────
│ │ var.additional_set is "{\"serviceAccount\":{\"name\":\"serviceAccount.annotations.eks\\\\.amazonaws\\\\.com/role-arn\",\"value\":\"arn:aws:iam::XXXXXXX:role/some-role\"}}"
│
│ Cannot use a string value in for_each. An iterable collection is required.
