Strip data streams from test Kubernetes

[mtojek]

This PR strips test Kubernetes package from data streams redundant in terms of functionality (features to test).

[elasticmachine]

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• Start Time: 2021-08-09T12:55:57.606+0000

• Duration: 23 min 5 sec

• Commit: a6e8120

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Test	Results
Failed	0
Passed	358
Skipped	4
Total	362

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[MichaelKatsoulis]

I think that some custom definitions like cronjob, job, ss, rq, pv, pvc are not needed. All the rest look perfect