chore: expose enable_fleet_feature in ACM example (#1648)

Author: apeabody

examples/simple_zonal_with_acm/README.md

@@ -39,6 +39,7 @@ After applying the Terraform configuration, you can run the following commands t
 | Name | Description | Type | Default | Required |
 |------|-------------|------|---------|:--------:|
 | cluster\_name\_suffix | A suffix to append to the default cluster name | `string` | `""` | no |
+| enable\_fleet\_feature | Whether to enable the ACM feature on the fleet. | `bool` | `true` | no |
 | project\_id | The project ID to host the cluster in | `string` | n/a | yes |
 | region | The region to host the cluster in | `string` | `"us-central1"` | no |
 | zone | The zone to host the cluster in | `string` | `"us-central1-a"` | no |

examples/simple_zonal_with_acm/acm.tf

@@ -24,6 +24,8 @@ module "acm" {
   sync_branch = "1.0.0"
   policy_dir  = "foo-corp"
 
+  enable_fleet_feature = var.enable_fleet_feature
+
   secret_type = "ssh"
 
   policy_bundles = ["https://github.com/GoogleCloudPlatform/acm-policy-controller-library/bundles/policy-essentials-v2022#e4094aacb91a35b0219f6f4cf6a31580e85b3c28"]

examples/simple_zonal_with_acm/variables.tf

@@ -36,3 +36,9 @@ variable "zone" {
   description = "The zone to host the cluster in"
   default     = "us-central1-a"
 }
+
+variable "enable_fleet_feature" {
+  description = "Whether to enable the ACM feature on the fleet."
+  type        = bool
+  default     = true
+}