Add Example For github_team_repository (integrations#676)

* Add Example For `github_team_repository`

also documents a limitation with `for_each` in this scenario

* fixup! add newline

examples/repository_team/README.md

@@ -0,0 +1,18 @@
+# Repository Team Example
+
+This demos populating a repository with a team. 
+
+This example will create a repositories in the specified `owner` organization. See https://www.terraform.io/docs/providers/github/index.html for details on configuring [`providers.tf`](./providers.tf) accordingly.
+
+Alternatively, you may use variables passed via command line:
+
+```console
+export GITHUB_OWNER=
+export GITHUB_TOKEN=
+```
+
+```console
+terraform apply \
+ -var "owner=${GITHUB_OWNER}" \
+ -var "github_token=${GITHUB_TOKEN}"
+```

examples/repository_team/main.tf

@@ -0,0 +1,41 @@
+# NOTE: There are errors when using the following syntax. See links for details.
+# /cc https:/hashicorp/terraform/issues/23529
+# /cc https:/hashicorp/terraform/issues/4149
+# /cc https:/integrations/terraform-provider-github/issues/500
+# 
+# data "github_team" "writers" {
+# slug = "writer-team"
+# }
+# 
+# resource "github_team_repository" "writers" {
+# for_each = data.github_team.writers.id
+# # or for multiple teams something like:
+# # for_each = { for obj in [data.github_team.writers] : obj.id => obj.id }
+# team_id = each.value
+# repository = "repo"
+# permission = "push"
+# }
+
+data "github_team" "writers" {
+ slug = "writers"
+}
+
+data "github_team" "editors" {
+ slug = "editors"
+}
+
+locals {
+ teams = [data.github_team.writers.id, data.github_team.editors.id]
+}
+
+resource "github_repository" "writers" {
+ name = "writers"
+ auto_init = true
+}
+
+resource "github_team_repository" "writers" {
+ count = length(local.teams)
+ team_id = local.teams[count.index]
+ repository = github_repository.writers.name 
+ permission = "push"
+}

examples/repository_team/providers.tf

@@ -0,0 +1,4 @@
+provider "github" {
+ owner = var.owner
+ token = var.github_token
+}

examples/repository_team/variables.tf

@@ -0,0 +1,9 @@
+variable "owner" {
+ description = "GitHub owner used to configure the provider"
+ type = string
+}
+
+variable "github_token" {
+ description = "GitHub access token used to configure the provider"
+ type = string
+}