Automatic merge from submit-queue (batch tested with PRs 54366, 54500). 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>.
Service controller / gce loadbalancer logging cleanup
**What this PR does / why we need it**:
From https://github.com/kubernetes/kubernetes/issues/52495, while looking into the potential scalability issue service controller may have, I found it really hard to debug as the log sometimes doesn't reference which LB it is for, or sometimes it just doesn't log at all. It get even harder that in correctness CIs we reduce verbose level to v1:
67bc30718f/jobs/env/ci-kubernetes-e2e-gce-scale-correctness.env (L16).
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #NONE
**Special notes for your reviewer**:
/assign @nicksardo @bowei
cc @shyamjvs
**Release note**:
```release-note
NONE
```
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