fix golint errors

[LilyAndLily]

No description provided.

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[k8s-ci-robot]

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[apelisse]

Thanks @LilyAndLily

/approve
/lgtm
/hold

I'll unhold when we the CI is updated to make sure that this doesn't happen again :-)
The code that verifies pull-requests lives somewhere in kubernetes/test-infra

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: apelisse, LilyAndLily

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[fejta-bot]

Issues go stale after 90d of inactivity.
Mark the issue as fresh with /remove-lifecycle stale.
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If this issue is safe to close now please do so with /close.

Send feedback to sig-testing, kubernetes/test-infra and/or fejta.
/lifecycle stale

[apelisse]

/retest
/hold cancel