Fix busybox nslookup example

[voelzmo]

• Similarly to Pin busybox to 1.28 #9901 pin busybox image to 1.28. Although https://bugs.busybox.net/show_bug.cgi?id=11161 is closed, this still doesn't work on images > 1.28
• remove /bin/sh from the command to be executed on busybox, this leads to /bin/sh: can't open 'nslookup': No such file or directory

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[cody-clark]

Hi, @voelzmo thanks for the PR. Before we can take a look, can you please sign the CLA?

Please follow instructions at https://git.k8s.io/community/CLA.md#the-contributor-license-agreement to sign the CLA.

[voelzmo]

Hey @cody-clark, thanks for the response. I'm trying to get under the umbrella of our corporate CLA, this might take a few days.

Thanks!

[voelzmo]

Woha, this was faster than I expected: I should be covered under the corporate CLA now.

[DanyC97]

/lgtm

[cody-clark]

Awesome, thanks @voelzmo!

Preview: https://deploy-preview-13071--kubernetes-io-master-staging.netlify.com/docs/tutorials/stateful-application/basic-stateful-set/#pods-in-a-statefulset

/approve

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