Tim Gross 9a6078a2ae node pools: implement support in scheduler (#17443) ...

Implement scheduler support for node pool:

* When a scheduler is invoked, we get a set of the ready nodes in the DCs that
  are allowed for that job. Extend the filter to include the node pool.
* Ensure that changes to a job's node pool are picked up as destructive
  allocation updates.
* Add `NodesInPool` as a metric to all reporting done by the scheduler.
* Add the node-in-pool the filter to the `Node.Register` RPC so that we don't
  generate spurious evals for nodes in the wrong pool.

2023-06-07 10:39:03 -04:00

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