added real-client-ip faq

[longwuyuan]

What this PR does / why we need it:

• Real-Client-IPaddress configuration related updates to the FAQ are made in this PR

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• CVE Report (Scanner found CVE and adding report)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation only

Which issue/s this PR fixes

• None

How Has This Been Tested?

• It is docs so no test required

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I've read the CONTRIBUTION guide
• I have added unit and/or e2e tests to cover my changes.
• All new and existing tests passed.

/kind documentation
/area docs
/triage accepted

cc @strongjz @Gacko

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[Gacko]

Left some comments. Please ping me as soon as you reviewed them and considered which ones to apply and which ones to leave. After that I'll give another review and LGTM.

[Gacko]

/cc @Gacko
/priority backlog

[Gacko]

/cherry-pick release-1.11

[k8s-infra-cherrypick-robot]

@Gacko: once the present PR merges, I will cherry-pick it on top of release-1.11 in a new PR and assign it to you.

In response to this:

/cherry-pick release-1.11

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-sigs/prow repository.

[Gacko]

/cherry-pick release-1.10

[k8s-infra-cherrypick-robot]

@Gacko: once the present PR merges, I will cherry-pick it on top of release-1.10 in a new PR and assign it to you.

In response to this:

/cherry-pick release-1.10

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-sigs/prow repository.

[longwuyuan]

Left some comments. Please ping me as soon as you reviewed them and considered which ones to apply and which ones to leave. After that I'll give another review and LGTM.

I applied all the changes as suggested. PTAL @Gacko .

[Gacko]

/lgtm

Thanks! ❤️

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Gacko, longwuyuan

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• docs/OWNERS [Gacko,longwuyuan]

Approvers can indicate their approval by writing /approve in a comment
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[k8s-infra-cherrypick-robot]

@Gacko: new pull request created: #11664

In response to this:

/cherry-pick release-1.11

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-sigs/prow repository.

[k8s-infra-cherrypick-robot]

@Gacko: new pull request created: #11665

In response to this:

/cherry-pick release-1.10

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-sigs/prow repository.