Automatic merge from submit-queue (batch tested with PRs 62937, 63105, 63031, 63174). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Revert "Revert "Revert revert of equivalence class hash calculation i…

…n scheduler""

This reverts commit 4386751b.



**What this PR does / why we need it**:
This re-introduces the change from https://github.com/kubernetes/kubernetes/pull/58555 which changes how the scheduler computes equivalence classes of pods. I believe we have fixed the flakiness observed previously (https://github.com/kubernetes/kubernetes/issues/61512, https://github.com/kubernetes/kubernetes/issues/62921). I have run the test in question a few dozen times without a failure.

```bash
make test-integration WHAT="./test/integration/scheduler" KUBE_TEST_ARGS="-run TestPreemptionStarvation" GOFLAGS="-v"
```

/ref https://github.com/kubernetes/kubernetes/issues/58222

**Special notes for your reviewer**:
I had to resolve several merge conflicts. I think I resolved them correctly, but keep an eye out for anything silly.

**Release note**:

```release-note
NONE
```
/sig scheduling