refactor!:remove hub from asm module (#665)

* remove hub from asm module

* fix test

* Change membership name to expected name

* clean up README.md

Author: cloud-pharaoh

examples/simple_zonal_with_asm/hub.tf

@@ -0,0 +1,24 @@
+/**
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+module "hub" {
+  source                  = "../../modules/hub"
+  project_id              = var.project_id
+  location                = module.gke.location
+  cluster_name            = module.gke.name
+  cluster_endpoint        = module.gke.endpoint
+  gke_hub_membership_name = "gke-asm-membership"
+}

modules/asm/README.md

@@ -2,10 +2,7 @@
 
 This module installs [Anthos Service Mesh](https://cloud.google.com/service-mesh/docs) (ASM) in a Kubernetes cluster.
 
-Specifically, this module automates the following steps for [installing ASM](https://cloud.google.com/service-mesh/docs/install):
-
-1. Installing the ASM Istio Operator on your cluster.
-2. Optionally registering your cluster with GKE Hub.
+Specifically, this module automates installing the ASM Istio Operator on your cluster ([installing ASM](https://cloud.google.com/service-mesh/docs/install))
 
 ## Usage
 
@@ -44,11 +41,7 @@ To deploy this config:
 | asm\_version | ASM version to deploy. Available versions are documented in https://github.com/GoogleCloudPlatform/anthos-service-mesh-packages | string | `"release-1.6-asm"` | no |
 | cluster\_endpoint | The GKE cluster endpoint. | string | n/a | yes |
 | cluster\_name | The unique name to identify the cluster in ASM. | string | n/a | yes |
-| enable\_gke\_hub\_registration | Enables GKE Hub Registration when set to true | bool | `"true"` | no |
 | gcloud\_sdk\_version | The gcloud sdk version to use. Minimum required version is 293.0.0 | string | `"296.0.1"` | no |
-| gke\_hub\_membership\_name | Memebership name that uniquely represents the cluster being registered on the Hub | string | `"gke-asm-membership"` | no |
-| gke\_hub\_sa\_name | Name for the GKE Hub SA stored as a secret `creds-gcp` in the `gke-connect` namespace. | string | `"gke-hub-sa"` | no |
-| internal\_ip | Use internal ip for the cluster endpoint. | bool | `"false"` | no |
 | location | The location (zone or region) this cluster has been created in. | string | n/a | yes |
 | project\_id | The project in which the resource belongs. | string | n/a | yes |
 | service\_account\_key\_file | Path to service account key file to auth as for running `gcloud container clusters get-credentials`. | string | `""` | no |
@@ -59,6 +52,5 @@ To deploy this config:
 | Name | Description |
 |------|-------------|
 | asm\_wait | An output to use when you want to depend on ASM finishing |
-| hub\_wait | An output to use when you want to depend on GKE hub finishing |
 
  <!-- END OF PRE-COMMIT-TERRAFORM DOCS HOOK -->

modules/asm/main.tf

@@ -32,18 +32,3 @@ module "asm_install" {
   kubectl_create_command  = "${path.module}/scripts/install_asm.sh ${var.project_id} ${var.cluster_name} ${var.location} ${var.asm_dir} ${var.asm_version}"
   kubectl_destroy_command = "kubectl delete ns istio-system"
 }
-
-module "gke_hub_registration" {
-  source = "../hub"
-
-  project_id                  = var.project_id
-  cluster_name                = var.cluster_name
-  cluster_endpoint            = var.cluster_endpoint
-  location                    = var.location
-  skip_gcloud_download        = var.skip_gcloud_download
-  gcloud_sdk_version          = var.gcloud_sdk_version
-  enable_gke_hub_registration = var.enable_gke_hub_registration
-  gke_hub_sa_name             = var.gke_hub_sa_name
-  gke_hub_membership_name     = var.gke_hub_membership_name
-
-}

modules/asm/outputs.tf

@@ -18,8 +18,3 @@ output "asm_wait" {
   description = "An output to use when you want to depend on ASM finishing"
   value       = module.asm_install.wait
 }
-
-output "hub_wait" {
-  description = "An output to use when you want to depend on GKE hub finishing"
-  value       = module.gke_hub_registration.wait
-}

modules/asm/variables.tf

@@ -46,30 +46,6 @@ variable "gcloud_sdk_version" {
   default     = "296.0.1"
 }
 
-variable "enable_gke_hub_registration" {
-  description = "Enables GKE Hub Registration when set to true"
-  type        = bool
-  default     = true
-}
-
-variable "gke_hub_sa_name" {
-  description = "Name for the GKE Hub SA stored as a secret `creds-gcp` in the `gke-connect` namespace."
-  type        = string
-  default     = "gke-hub-sa"
-}
-
-variable "gke_hub_membership_name" {
-  description = "Memebership name that uniquely represents the cluster being registered on the Hub"
-  type        = string
-  default     = "gke-asm-membership"
-}
-
-variable "internal_ip" {
-  description = "Use internal ip for the cluster endpoint."
-  type        = bool
-  default     = false
-}
-
 variable "asm_dir" {
   description = "Name of directory to keep ASM resource config files."
   type        = string