feat: add output for custom role name for use in IAM role bindings (#230)

Author: kcyau

modules/custom_role_iam/README.md

@@ -62,5 +62,6 @@ module "custom-roles" {
 | Name | Description |
 |------|-------------|
 | custom\_role\_id | ID of the custom role created. |
+| custom\_role\_name | Name of the custom role created in the format {{target\_level}}/{{target\_id}}/roles/{{role\_id}}, for use as a reference in other resources such as IAM role bindings. |
 
 <!-- END OF PRE-COMMIT-TERRAFORM DOCS HOOK -->

modules/custom_role_iam/outputs.tf

@@ -18,3 +18,8 @@ output "custom_role_id" {
   value       = local.custom-role-output
   description = "ID of the custom role created."
 }
+
+output "custom_role_name" {
+  value       = (var.target_level == "project") ? google_project_iam_custom_role.project-custom-role[0].name : google_organization_iam_custom_role.org-custom-role[0].name
+  description = "Name of the custom role created in the format {{target_level}}/{{target_id}}/roles/{{role_id}}, for use as a reference in other resources such as IAM role bindings."
+}