fix some golint errs

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[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: LilyAndLily To complete the pull request process, please assign shivramsrivastava You can assign the PR to them by writing /assign @shivramsrivastava in a comment when ready.

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[k8s-ci-robot]

Hi @LilyAndLily. Thanks for your PR.

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Stale issues rot after 30d of inactivity. Mark the issue as fresh with /remove-lifecycle rotten. Rotten issues close after an additional 30d of inactivity.

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Rotten issues close after 30d of inactivity. Reopen the issue with /reopen. Mark the issue as fresh with /remove-lifecycle rotten.

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[k8s-ci-robot]

@fejta-bot: Closed this PR.

In response to [this](https://github.com/kubernetes-sigs/poseidon/pull/177#issuecomment-603194330): >Rotten issues close after 30d of inactivity. >Reopen the issue with `/reopen`. >Mark the issue as fresh with `/remove-lifecycle rotten`. > >Send feedback to sig-testing, kubernetes/test-infra and/or [fejta](https://github.com/fejta). >/close 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.