fix(anthos-attached-cluster): document modules (#714)

Author: apeabody

anthos-attached-clusters/modules/attached-install-manifest/README.md

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+# Attached Install Manifest
+
+## Example usage
+
+```
+module "attached_install_manifest" {
+  source                         = "./attached-install-manifest"
+  attached_cluster_name          = CUSTER NAME
+  attached_cluster_fleet_project = PROJECT ID
+  gcp_location                   = LOCATION
+  platform_version               = VERSION
+}
+```
+
+<!-- BEGINNING OF PRE-COMMIT-TERRAFORM DOCS HOOK -->
+## Inputs
+
+| Name | Description | Type | Default | Required |
+|------|-------------|------|---------|:--------:|
+| attached\_cluster\_fleet\_project | GCP fleet project ID where the cluster will be attached | `string` | n/a | yes |
+| attached\_cluster\_name | Name for the attached cluster resource | `string` | n/a | yes |
+| gcp\_location | GCP location to create the attached resource in | `string` | `"us-west1"` | no |
+| platform\_version | Platform version of the attached cluster resource | `string` | `"1.28.8-gke.3"` | no |
+| temp\_dir | Directory name to temporarily write out the helm chart for bootstrapping the attach process | `string` | `""` | no |
+
+## Outputs
+
+No outputs.
+
+<!-- END OF PRE-COMMIT-TERRAFORM DOCS HOOK -->

anthos-attached-clusters/modules/attached-install-mesh/README.md

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+# Attached Install Mesh
+
+Sample module to install [Google Cloud Service Mesh](https://cloud.google.com/products/service-mesh) on [GKE Attached Clusters](https://cloud.google.com/kubernetes-engine/multi-cloud/docs/attached).
+
+## Example usage
+
+```
+module "install-mesh" {
+  source = "./attached-install-mesh"
+
+  kubeconfig = kind_cluster.cluster.kubeconfig_path
+  context    = local.cluster_context
+  fleet_id   = data.google_project.project.project_id
+}
+```
+
+<!-- BEGINNING OF PRE-COMMIT-TERRAFORM DOCS HOOK -->
+## Inputs
+
+| Name | Description | Type | Default | Required |
+|------|-------------|------|---------|:--------:|
+| activate\_service\_account | Set to false to skip running `gcloud auth activate-service-account`. Optional. | `bool` | `true` | no |
+| asmcli\_download\_url | Custom asmcli download url. Optional. | `string` | `null` | no |
+| asmcli\_version | The asmcli version to download. Optional. | `string` | `"1.22"` | no |
+| context | The cluster contex. | `string` | n/a | yes |
+| fleet\_id | The fleet\_id. | `string` | n/a | yes |
+| gcloud\_download\_url | Custom gcloud download url. Optional. | `string` | `null` | no |
+| gcloud\_sdk\_version | The gcloud sdk version to download. Optional. | `string` | `"491.0.0"` | no |
+| jq\_download\_url | Custom jq download url. Optional. | `string` | `null` | no |
+| jq\_version | The jq version to download. Optional. | `string` | `"1.6"` | no |
+| kubeconfig | The kubeconfig path. | `string` | n/a | yes |
+| platform | Platform asmcli will run on. Valid values: linux [default], darwin. Optional. | `string` | `"linux"` | no |
+| service\_account\_key\_file | Path to service account key file to run `gcloud auth activate-service-account` with. Optional. | `string` | `""` | no |
+| use\_tf\_google\_credentials\_env\_var | Use `GOOGLE_CREDENTIALS` environment variable to run `gcloud auth activate-service-account` with. Optional. | `bool` | `false` | no |
+
+## Outputs
+
+| Name | Description |
+|------|-------------|
+| wait | An output to use when you want to depend on cmd finishing |
+
+<!-- END OF PRE-COMMIT-TERRAFORM DOCS HOOK -->