Add tofu manifests for setting up workers.

main.tf

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+# Define required providers
+terraform {
+required_version = ">= 0.14.0"
+  required_providers {
+    openstack = {
+      source  = "terraform-provider-openstack/openstack"
+      version = "~> 1.53.0"
+    }
+  }
+}
+
+# Configure the OpenStack Provider
+provider "openstack" {
+  cloud = "sto4-rut"
+}
+
+resource "openstack_compute_instance_v2" "worker-nodes" {
+  count           = var.instance_count
+  name            = "${var.worker_name}-${count.index}.${var.dns_suffix}"
+  flavor_id       = "${var.instance_type}"
+  key_pair        = "mifr-yubi"
+  security_groups = ["microk8s", "Allow SSH from SUNET jumphosts", "Allow ssh from the world"]
+
+  block_device {
+    uuid                  = "5d24aca9-11be-4de1-9770-4a097d68f361"
+    source_type           = "image"
+    volume_size           = 20
+    boot_index            = 0
+    destination_type      = "volume"
+    delete_on_termination = true
+  }
+
+  network {
+    name = "public"
+  }
+}

vars.tf

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+variable "instance_count" {
+  default = "6"
+}
+
+variable "instance_type" {
+  default = "e2677a72-f9ab-44ce-b808-58ab3414bac6"
+}
+variable "worker_name" {
+  default = "internal-sto4-test-k8sw"
+}
+variable "dns_suffix" {
+  default = "rut.sunet.se"
+}