Support logging request using `X-Echo-Log-Request` Header

[Treenhan]

When sending a request to echo-server with the X-Echo-Log-Request header, echo-server will log the request out, allowing us to inspect the received headers from ingress.

This is the first item in https://github.com/kubernetes-sigs/gateway-api/issues/2142

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[k8s-ci-robot]

Hi @Treenhan. Thanks for your PR.

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[Treenhan]

This is the change to the echo-server mentioned in https://github.com/kubernetes-sigs/gateway-api/issues/2142

@shaneutt could you take a look?

[shaneutt]

/ok-to-test

[Treenhan]

/retest

[Treenhan]

/retest

[Treenhan]

/retest

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: shaneutt, Treenhan Once this PR has been reviewed and has the lgtm label, please assign bowei for approval. For more information see the Kubernetes Code Review Process.

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Needs approval from an approver in each of these files: - **[OWNERS](https://github.com/kubernetes-sigs/ingress-controller-conformance/blob/master/OWNERS)** Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[shaneutt]

@thockin I think I might not be able to approve here, if you have a second to check this one out it would be appreciated. :vulcan_salute:

[robscott]

Thanks @Treenhan! Now that this image has effectively moved to the Gateway API repo with https://github.com/kubernetes-sigs/gateway-api/pull/2447, do you mind redirecting this PR there? I think this repo is effectively frozen after that move, so will close this one out.

/close

[k8s-ci-robot]

@robscott: Closed this PR.

In response to [this](https://github.com/kubernetes-sigs/ingress-controller-conformance/pull/108#issuecomment-1769583033): >Thanks @Treenhan! Now that this image has effectively moved to the Gateway API repo with https://github.com/kubernetes-sigs/gateway-api/pull/2447, do you mind redirecting this PR there? I think this repo is effectively frozen after that move, so will close this one out. > >/close Instructions for interacting with me using PR comments are available [here](https://git.k8s.io/community/contributors/guide/pull-requests.md). If you have questions or suggestions related to my behavior, please file an issue against the [kubernetes/test-infra](https://github.com/kubernetes/test-infra/issues/new?title=Prow%20issue:) repository.