rename iam variable in source repo module

modules/source-repository/README.md

@@ -12,7 +12,7 @@ module "repo" {
   source    e = "./modules/source-repository"
   project_id = "my-project"
   name       = "my-repo"
-  iam_members = {
+  iam = {
     "roles/source.reader" = ["user:foo@example.com"]
   }
 }
@@ -23,9 +23,9 @@ module "repo" {
 
 | name | description | type | required | default |
 |---|---|:---: |:---:|:---:|
-| name | Repository topic name. | <code title="">string</code> | ✓ |  |
+| name | Repository name. | <code title="">string</code> | ✓ |  |
 | project_id | Project used for resources. | <code title="">string</code> | ✓ |  |
-| *iam_members* | IAM members for each topic role. | <code title="map&#40;set&#40;string&#41;&#41;">map(set(string))</code> |  | <code title="">{}</code> |
+| *iam* | IAM bindings in {ROLE => [MEMBERS]} format. | <code title="map&#40;list&#40;string&#41;&#41;">map(list(string))</code> |  | <code title="">{}</code> |
 
 ## Outputs
 

modules/source-repository/main.tf

@@ -20,7 +20,7 @@ resource "google_sourcerepo_repository" "default" {
 }
 
 resource "google_sourcerepo_repository_iam_binding" "default" {
-  for_each   = var.iam_members
+  for_each   = var.iam
   project    = var.project_id
   repository = google_sourcerepo_repository.default.name
   role       = each.key

modules/source-repository/variables.tf

@@ -19,13 +19,13 @@ variable "project_id" {
   type        = string
 }
 
-variable "iam_members" {
-  description = "IAM members for each topic role."
-  type        = map(set(string))
+variable "iam" {
+  description = "IAM bindings in {ROLE => [MEMBERS]} format."
+  type        = map(list(string))
   default     = {}
 }
 
 variable "name" {
-  description = "Repository topic name."
+  description = "Repository name."
   type        = string
 }