Add label for k-sigs/contributor-playground

[Okabe-Junya]

ref. kubernetes-sigs/contributor-playground#2177

What this PR does / why we need it:

• to create some area/ labels for k-sigs/contributor-playground

[k8s-ci-robot]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
You can still manually trigger a test run with /test all

[Priyankasaggu11929]

@Okabe-Junya, thank you so much for the PR.

I left 2 inline comments.

[Okabe-Junya]

Thank you for your review, Priyankasaggu11929!
fixed all comments, so PTAL again

/cc Priyankasaggu11929
/assign Priyankasaggu11929

[Okabe-Junya]

JFYI: I also updated in k-sigs/contributor-playground (diff)

[Priyankasaggu11929]

Thank you, @Okabe-Junya.

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Okabe-Junya, Priyankasaggu11929

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• label_sync/OWNERS [Priyankasaggu11929]

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[k8s-ci-robot]

@Okabe-Junya: Updated the label-config configmap in namespace test-pods at cluster k8s-infra-prow-build-trusted using the following files:

• key labels.yaml using file label_sync/labels.yaml

In response to this:

ref. kubernetes-sigs/contributor-playground#2177

What this PR does / why we need it:

• to create some area/ labels for k-sigs/contributor-playground

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