Tags not working when updating netbox-clusters

[ps-misc]

Terraform Version

terraform v0.14.9
provider v0.2.2
netbox v2.10.10

Affected Resource(s)

netbox-cluster

Terraform Configuration Files

provider "netbox" {
  server_url            = var.netbox_server
  api_token             = var.netbox_api_token
  allow_insecure_https  = true
}

resource "netbox_cluster" "cluster" {
    name = var.netbox_cluster.name
    cluster_type_id = var.netbox_cluster.cluster_type_id
    tags = [
      var.netbox_cluster.env,
      var.netbox_cluster.client
    ]
}

variable "netbox_cluster" {
  type = object({
    name = string
    cluster_type_id = number
    env = string
    client = string
  })
}

netbox_cluster = {
    name = "test"
    cluster_type_id = 2
    env = "test"
    client = "infra"
}

Expected Behavior

Terraform should update the cluster test and add the Tags "test" and "infra"

Actual Behavior

Terraform states the following error:
Error: [PATCH /virtualization/clusters/{id}/][400] virtualization_clusters_partial_update default map[tags:[This field may not be null.]]
on main.tf line 72, in resource "netbox_cluster" "cluster":
72: resource "netbox_cluster" "cluster" {

Steps to Reproduce

1. terraform apply

Root Cause

Tags are not set inside the update function of the Cluster-Resource.
(terraform-provider-netbox/netbox/resource_netbox_cluster.go: func resourceNetboxClusterUpdate)

Recommended Bugfig

add "tags, _ := getNestedTagListFromResourceDataSet(api, d.Get("tags"))
data.Tags = tags"
to terraform-provider-netbox/netbox/resource_netbox_cluster.go inside the function resourceNetboxClusterUpdate.

[fbreckle]

Indeed, tags seem to not be covered by the tests for the cluster resource. This should be fixed as well.