Add configuration for Typhoon based acceptance test environment (#807)

Author: alexsomesan

kubernetes/test-infra/typhoon-aws/README.md

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+# Typhoon Kubernetes clusters on AWS
+
+This environment deploys a Kubernetes cluster using the Typhoon distribution. See here for details: https://github.com/poseidon/typhoon
+
+You will need the standard AWS environment variables to be set, e.g.
+
+  - `AWS_ACCESS_KEY_ID`
+  - `AWS_SECRET_ACCESS_KEY`
+
+See [AWS Provider docs](https://www.terraform.io/docs/providers/aws/index.html#configuration-reference) for more details about these variables
+and alternatives, like `AWS_PROFILE`.
+
+Additionally, a publicly accesible DNS domain registered as a Route53 managed zone is required.
+The name of the domain should be passed to terraform via the `base_domain` input variable.
+
+Example:
+
+```export TF_VAR_base_domain=k8s.myself.com```
+## Versions
+
+You can set the desired version of Kubernetes by editing the `main.tf` configuration file and replacing the version in the source URL of the `typhoon-acc` module.
+
+Example:
+```
+
+module "typhoon-acc" {
+  source = "git::https://github.com/poseidon/typhoon//aws/fedora-coreos/kubernetes?ref=v1.18.0" # set the desired Kubernetes version here
+...
+```
+## Worker node count and instance type
+
+You can control the amount of worker nodes in the cluster as well as their machine type, using the following variables:
+
+ - `TF_VAR_controller_count`
+ - `TF_VAR_controller_type`
+ - `TF_VAR_workers_count`
+ - `TF_VAR_workers_type`
+
+Export values for them or pass them to the apply command line.
+
+## Build the cluster
+
+```
+terraform init
+terraform apply -var=cluster_name=typhoon
+```
+
+## Exporting K8S variables
+To access the cluster you need to export the `KUBECONFIG` variable pointing to the `kubeconfig` file for the current cluster.
+```
+export KUBECONFIG="$(terraform output kubeconfig_path)"
+```
+
+Now you can access the cluster via `kubectl` and you can run acceptance tests against it.
+
+To run acceptance tests, your the following command in the root of the repository.
+```
+TESTARGS="-run '^TestAcc'" make testacc
+```
+
+To run only a specific set of tests, you can replace `^TestAcc` with any regular expression to filter tests by name.
+For example, to run tests for Pod resources, you can do:
+```
+TESTARGS="-run '^TestAccKubernetesPod_'" make testacc
+```

kubernetes/test-infra/typhoon-aws/main.tf

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+resource "tls_private_key" "typhoon-acc" {
+  algorithm = "RSA"
+}
+
+resource "local_file" "public_key_openssh" {
+  content    = tls_private_key.typhoon-acc.public_key_openssh
+  filename   = "${path.cwd}/${var.cluster_name}.pub"
+}
+
+resource "local_file" "private_key_pem" {
+  content    = tls_private_key.typhoon-acc.private_key_pem
+  filename   = "${path.cwd}/${var.cluster_name}"
+}
+
+resource "null_resource" "ssh-key" {
+  provisioner "local-exec" {
+    command = format("chmod 600 %v", local_file.private_key_pem.filename)
+    working_dir = path.cwd
+  }
+  provisioner "local-exec" {
+    command = format("ssh-add %v", local_file.private_key_pem.filename)
+    working_dir = path.cwd
+  }
+}
+
+data "aws_route53_zone" "typhoon-acc" {
+  name = var.base_domain
+}
+
+module "typhoon-acc" {
+  source = "git::https://github.com/poseidon/typhoon//aws/fedora-coreos/kubernetes?ref=v1.18.0" # set the desired Kubernetes version here
+
+  cluster_name = var.cluster_name
+  dns_zone     = var.base_domain
+  dns_zone_id  = data.aws_route53_zone.typhoon-acc.zone_id
+
+  # node configuration
+  ssh_authorized_key = tls_private_key.typhoon-acc.public_key_openssh
+
+  worker_count = var.worker_count
+  controller_count = var.controller_count
+  worker_type  = var.controller_type
+  controller_type = var.worker_type
+}
+
+resource "local_file" "typhoon-acc" {
+  content  = module.typhoon-acc.kubeconfig-admin
+  filename = "kubeconfig"
+}
+
+output "kubeconfig_path" {
+  value = "${path.cwd}/${local_file.typhoon-acc.filename}"
+}

kubernetes/test-infra/typhoon-aws/variables.tf

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+variable "base_domain" {
+  type = string
+}
+
+variable "cluster_name" {
+  type = string
+}
+
+variable "controller_count" {
+  default = 1
+}
+
+variable "worker_count" {
+  default = 4
+}
+
+variable "controller_type" {
+  default = "m5a.xlarge"
+}
+
+variable "worker_type" {
+  default = "m5a.large"
+}