Add cdn service instance

terraform/app/cdn.tf

@@ -0,0 +1,18 @@
+data "cloudfoundry_service" "cdn_route" {
+  name = "cdn-route"
+}
+
+resource "cloudfoundry_service_instance" "cdn_route" {
+  count        = local.environment == "prod" ? 1 : (local.environment == "staging" ? 1 : 0)
+  name         = local.environment == "prod" ? "get-help-buying-for-schools" : "get-help-buying-for-schools-staging"
+  space        = data.cloudfoundry_space.space.id
+  service_plan = data.cloudfoundry_service.cdn_route.service_plans["cdn-route"]
+  json_params = jsonencode(
+    {
+      domain = "${local.custom_hostname}.${local.custom_cloudfoundry_domain}"
+    }
+  )
+  lifecycle {
+    prevent_destroy = true
+  }
+}