Automatic merge from submit-queue (batch tested with PRs 55977, 56198, 57202, 57254, 57214). 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>.
CPU manager no-op policy is on by default.
**What this PR does / why we need it**:
- Turn on the CPUManager feature gate by default.
- Mark CPU manager feature as beta.
Fixes#52031
**Special notes for your reviewer**:
/hold
Do not merge until:
- [ ] gating e2e tests are enabled in CI
**Release note**:
```release-note
Graduate CPU Manager feature from alpha to beta.
```
f87853625b