[YUNIKORN-468]: Node resource updates should trigger cleanup

[manirajv06]

@wilfred-s WIP patch with lot of "todo" comments to confirm the overall idea/direction. Can you please take a quick look?

[wilfred-s]

I think we need to first sort out how and what we are going to do here. Lets start the discussion on the jira so we can figure out:

• what we want the behaviour to be
• how does this relate to occupied resources of the node (non yunikorn scheduled ones)
• what we want to make configurable
• how that interacts with apps and queues and the rest of preemption

At the moment this is not a high priority as K8s can not change a node's size as far as I know (i.e. nodes are not fixed in mem etc after creation). Before we thus dive in lets figure out what we want/need.

[craigcondit]

Closing as abandoned.