[FLINK-16921][e2e] Disable K8s tests until instability is resolved

[rmetzger]

What is the purpose of the change

Disable an unstable e2e test.

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Last check on commit f49ae09 (Sun Apr 05 17:55:37 UTC 2020)

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[rmetzger]

Azure is almost green in my private build for this: https://dev.azure.com/rmetzger/Flink/_build/results?buildId=7082&view=logs&j=e428c73e-5bb8-51ab-b1f4-da736192251d&t=fb85e9b1-9460-5259-9251-5d7b922523ea

[pnowojski]

Is this test always failing? I've seen it reported only once in the last 1+ month. If so, maybe disabling it is an overkill?

[rmetzger]

2/3 finished master builds today failed with this, yesterday all nightly runs failed with this.
Maybe I should report all failures I see in the ticket :)

Update: added some more cases to the ticket https://issues.apache.org/jira/browse/FLINK-16921

[pnowojski]

Ahh, I'm getting old and blind. I was looking at https://issues.apache.org/jira/browse/FLINK-16291 instead of https://issues.apache.org/jira/browse/FLINK-16921