conformance: Add Cilium report for 1.2.1

[sayboras]

What type of PR is this?

/kind documentation
/area conformance

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #

Does this PR introduce a user-facing change?:

NONE

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: sayboras
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[k8s-ci-robot]

Hi @sayboras. 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.

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[mlavacca]

Thanks for this report, @sayboras!

/ok-to-test

[LiorLieberman]

/cc

@sayboras mind checking PercentageBasedRequestMirror conformance? you had previously mentioned it Cilium supports it. Ref #3508