Function to drain and cordon "nodes"

### Summary

We should add two buttons on the "node" resource to either drain or cordon a selected node.

### Motivation

In daily operations of a cluster I need to rotate nodes. For this I'm using either the cordon and/or drain function. This should be available in the UI.

### Proposal

We should add two buttons on the "node" resource to either drain or cordon a selected node.