Attempting to remove controlplane role from a node that had etcd and controlplane node results in broken cluster.

[sangeethah]

rke version v0.0.7-dev
Steps to reproduce the problem:
Create a kubetnetes setup with following configuration:
node1 - etcd , controlplane
node 2 - worker
node 3 - controlplane.

Modify node1's role to be only "etcd" (by removing controlplane node).
This results in k8s cluster broken.

Controlplane tear down results in etcd data dir being removed as well resulting in broken cluster.

[sangeethah]

rke version v0.0.7-dev
Steps to reproduce the problem:

Create a kubernetes setup with following configuration:
node1 - etcd , controlplane
node2 ,node3 - worker
node4, node5 - controlplane.

Update node1's role to be only "etcd".

node1 gets removed from the k8s cluster as master node.
etcd container on this node continues to be present.
K8s cluster is healthy . Existing pods continue to work and we are able to create new pods.