util/watch: Add relist rate limiting #736
Draft
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This will be required for the autoscaler-agent as we try to use the VM spec as a source of truth (ref #350); we need relist rate limiting because we need relists in order to make a consistent read of the source of truth.
(For the scheduler, we're mostly fine without this - in practice, rate of relists is quite low.)
Like #727, marked as draft until there's a PR that actually uses it.
Also haven't tested this; need to do so before merging — some kind of ad-hoc testing like what was used for #667 should suffice.