[BUG] can't remove machine_labels or taints from existing machine_pools

[lestich]

Rancher Server Setup

• Rancher version: 2.7.2

Information about the Cluster

• Kubernetes version: v1.25.15+rke2r2
• Cluster Type (Local/Downstream): Downstream, VMware vSphere RKE2

User Information

• What is the role of the user logged in? (Admin/Cluster Owner/Cluster Member/Project Owner/Project Member/Custom): Admin

Provider Information

• What is the version of the Rancher v2 Terraform Provider in use? 3.0.0 (still exist in 3.2.0)
• What is the version of Terraform in use? v1.6.2

Describe the bug

We have different nodepools created by the tf-resource rancher2_cluster_v2 . Some of the nodepools have machine_labels and taints attached. If we want to remove an machine_label or taint from an existing nodepool (i.e. setting the machine_labels inside the dynamic "machine_pools" to {}) terraform just ignores it.

The corresponding code is here: https://github.com/rancher/terraform-provider-rancher2/blob/master/rancher2/structure_cluster_v2_rke_config_machine_pool.go#L69

To Reproduce

Create a nodepool via the rancher2_cluster_v2 tf ressource and try to remove machine_labels / taints by setting the map to null or an empty map

Actual Result

nothing happens

Expected Result

The labels / taints should be removed i.e. the check for len > 0 should be removed.

Screenshots

Additional context

[pvlkov]

+1 also running into this issue

[br0nwe]

+1