Proposal feature: Adding label to node after applying the job

This is supposed to be an proposal for a new feature. It will allow you to add a label to a node you update via your Plans.

Idea: By this you could label nodes with something like a patch level to distinguish between already updated nodes. Why would one need this? Imagine you want to add nodes to your cluster and keep all nodes on the same patch level. You could then setup Plans which exclude already patched nodes via the nodeSelector and apply the updates only to the newly joined nodes.