[RFE] Generate Harvester cloud provider kubeconfig using terraform resource

[avekrivoy]

Is your feature request related to a problem? Please describe.

According to the documentation, the first step in integrating the downstream Rancher cluster with the Harvester cloud provider is to create a service account in the Harvester cluster and "associate" kubeconfig with it. This kubeconfig has to be passed as argument to machine_selector_config block of a rancher2_cluster_v2 resource.

Service account must be created manually using an API call (curl). Would be nice to have a terraform resource that implements this feature

Describe the solution you'd like

Ideally, it would be great to have a resource that takes k8s cluster namespace and service account as parameters and returns kubeconfig associated with the service account.