Policer "clean" metrics flag #3795
Description
Is your feature request related to a problem? Please describe.
Policer can signal if it has done any real changes in the previous cycle which can be helpful to detect if the cluster is in the consistent state.
Describe the solution you'd like
Add a boolean policer consistency metric, start with false then if policer makes a full cycle without doing any relocations (not counting local deletions) we flag it as true (meaning, consistent). Then once it does any relocation subsequently it sets the flag to false till a full clean cycle is made again.
Describe alternatives you've considered
Theoretically this can be per-container and/or tied to contract-level state, but let's start simple for now.