Stop relying setting RemoveSelfLink=false feature-gate - we're locking it to true with GA graduation in 1.24

[wojtek-t]

Upstream Kubernetes is going to get rid of ability to set SelfLink in release 1.24 (basically graduate graduate RemoveSelfLink feature gate to stable - see the KEP https://github.com/kubernetes/enhancements/tree/master/keps/sig-api-machinery/1164-remove-selflink, for a bit more details).

It seems that microk8s is still relying on setting it to false in one place:
https://github.com/vasyakrg/rancher-ceph/blob/master/2.Rancher/cluster.yml#L43

This is one more heads'up to stop relying on it.

[vasyakrg]

yes, thanks