Clarify docstring for ReplacePrefixMatch.

[briantkennedy]

Make example text clearer and add table of replacement cases.

What type of PR is this?
/kind documentation

Optionally add one or more of the following kinds if applicable:
/area conformance

What this PR does / why we need it:

The docstring is a bit unclear, and edge cases are not explicitly defined.

Which issue(s) this PR fixes:
Fixes #2078

Does this PR introduce a user-facing change?:

NONE

[k8s-ci-robot]

Hi @briantkennedy. Thanks for your PR.

I'm waiting for a kubernetes-sigs member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[robscott]

Thanks @briantkennedy!

/ok-to-test

[robscott]

Thanks @briantkennedy! Do you mind running make generate to get the presubmits to pass? Otherwise this LGTM.

[robscott]

I think this is the key detail. This should work well for Envoy-based implementations, but it would be good to get some representatives from other implementations to confirm this will be compatible for them as well.

/cc @shaneutt @mlavacca @pleshakov @brianehlert @kflynn

[k8s-ci-robot]

@robscott: GitHub didn't allow me to request PR reviews from the following users: pleshakov, brianehlert.

Note that only kubernetes-sigs members and repo collaborators can review this PR, and authors cannot review their own PRs.

In response to this:

I think this is the key detail. This should work well for Envoy-based implementations, but it would be good to get some representatives from other implementations to confirm this will be compatible for them as well.

/cc @shaneutt @mlavacca @pleshakov @brianehlert

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[robscott]

Thanks @briantkennedy!

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: briantkennedy, mlavacca, pleshakov, robscott

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