make authorized_domains O+C and add test

mmv1/products/identityplatform/Config.yaml

@@ -50,6 +50,17 @@ examples:
       # Set quota start time for the following day.
       quota_start_time: 'time.Now().AddDate(0, 0, 1).Format(time.RFC3339)'
     skip_vcr: true
+  - !ruby/object:Provider::Terraform::Examples
+    name: 'identity_platform_config_minimal'
+    primary_resource_id: 'default'
+    vars:
+      project_id: 'my-project-1'
+    test_env_vars:
+      org_id: :ORG_ID
+      billing_acct:
+        :BILLING_ACCT
+    skip_vcr: true
+    skip_docs: true
 custom_code: !ruby/object:Provider::Terraform::CustomCode
   custom_create: 'templates/terraform/custom_create/identity_platform_config.go'
 properties:
@@ -129,4 +140,4 @@ properties:
     description: |
       List of domains authorized for OAuth redirects.
     item_type: Api::Type::String
-    # default_from_api: true
+    default_from_api: true

mmv1/templates/terraform/examples/identity_platform_config_basic.tf.erb

@@ -35,4 +35,9 @@ resource "google_identity_platform_config" "default" {
       quota_duration = "7200s"
     }
   }
+  authorized_domains = [
+    "localhost",
+    "<%= ctx[:vars]['project_id'] %>.firebaseapp.com",
+    "<%= ctx[:vars]['project_id'] %>.web.app",
+  ]
 }

mmv1/templates/terraform/examples/identity_platform_config_minimal.tf.erb

@@ -0,0 +1,19 @@
+resource "google_project" "default" {
+  project_id = "<%= ctx[:vars]['project_id'] %>"
+  name       = "<%= ctx[:vars]['project_id'] %>"
+  org_id     = "<%= ctx[:test_env_vars]['org_id'] %>"
+  billing_account =  "<%= ctx[:test_env_vars]['billing_acct'] -%>"
+  labels = {
+    firebase = "enabled"
+  }
+}
+
+resource "google_project_service" "identitytoolkit" {
+  project = google_project.default.project_id
+  service = "identitytoolkit.googleapis.com"
+}
+
+
+resource "google_identity_platform_config" "default" {
+  project = google_project.default.project_id
+}