Automatic merge from submit-queue (batch tested with PRs 60159, 60731, 60720, 60736, 60740). 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>.
Expect NetworkTier not to be set as GCE value (all uppercase)
**What this PR does / why we need it**:
Reverts L76 and L123 from this PR - https://github.com/kubernetes/kubernetes/pull/59941/files#diff-497d33fc55a7de6c5bde6cbe33ecbb3cL78 . NetworkTier is set on the mock Service in Camel Case, not all uppercase.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes#60721
**Release note**:
```release-note
NONE
```
/assign MrHohn nicksardo
e111ccbe09