cleanup our custom way of having gzipped userdata with RKE2
Because we had a critical need for it we introduced our own custom build of RKE2 provider with a PoC implementation to gzip user-data. This was introduced in !4326 (merged).
This feature has now been fully implemented upstream (https://github.com/rancher/cluster-api-provider-rke2/issues/639 implemented in https://github.com/rancher/cluster-api-provider-rke2/pull/649), and we now need to:
- wait for an RKE2 provider release having the feature
- rebuild our custom build without this PoC code
- extend sylva-capi-cluster to set
gzipUserData: trueonRKE2ControlPlaneandRKE2ConfigTemplateresources