Fix to avoid failure with periodic-kubernetes-containerd-conformance-test-ppc64le

[Rajalakshmi-Girish]

Fix temporarily till https://github.com/kubernetes-sigs/kubetest2/issues/254 is fixed.

[ppc64le-cloud-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: mkumatag, Rajalakshmi-Girish

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[ppc64le-cloud-bot]

@Rajalakshmi-Girish: Updated the job-config configmap in namespace prow at cluster default using the following files:

• key test-kubernetes-periodics.yaml using file config/jobs/periodic/kubernetes/test-kubernetes-periodics.yaml

In response to [this](https://github.com/ppc64le-cloud/test-infra/pull/437): >Fix temporarily till https://github.com/kubernetes-sigs/kubetest2/issues/254 is fixed. 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.