Automatic merge from submit-queue (batch tested with PRs 67578, 68154, 68162, 65545). If you want to cherry-pick this change to another branch, please follow the instructions here: https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md.
Fixes#67561 Multiple same headers got wrong result on gcr.io/google-containers/echoserver:1.10
**What this PR does / why we need it**:
Fix a bug of echoserver
**Which issue(s) this PR fixes**:
Fixes#67561
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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