cli: set constellation uid and role as instance metadata of OpenStack instances (#1311)

cli/internal/terraform/terraform/openstack/main.tf

@@ -135,6 +135,7 @@ module "instance_group_control_plane" {
     openstack_compute_secgroup_v2.vpc_secgroup.id,
   ]
   tags              = local.tags
+  uid               = local.uid
   disk_size         = var.state_disk_size
   availability_zone = var.availability_zone
   network_id        = openstack_networking_network_v2.vpc_network.id
@@ -149,6 +150,7 @@ module "instance_group_worker" {
   image_id       = openstack_images_image_v2.constellation_os_image.image_id
   flavor_id      = var.flavor_id
   tags           = local.tags
+  uid            = local.uid
   security_groups = [
     openstack_compute_secgroup_v2.vpc_secgroup.id,
   ]

cli/internal/terraform/terraform/openstack/modules/instance_group/main.tf

@@ -48,6 +48,8 @@ resource "openstack_compute_instance_v2" "instance_group_member" {
     delete_on_termination = true
   }
   metadata = {
+    constellation-role             = local.role_dashed
+    constellation-uid              = var.uid
     constellation-init-secret-hash = var.init_secret_hash
   }
   availability_zone_hints = var.availability_zone

cli/internal/terraform/terraform/openstack/modules/instance_group/variables.tf

@@ -3,6 +3,11 @@ variable "name" {
   description = "Base name of the instance group."
 }
 
+variable "uid" {
+  type        = string
+  description = "Unique ID of the Constellation."
+}
+
 variable "role" {
   type        = string
   description = "The role of the instance group."