update K8s version to 0.20.2#74

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Beckham007 wants to merge 4 commits intotkestack:masterfrom

Beckham007:k8s-version

Commits on Feb 4, 2021

update k8s version to 0.20.2
randomcheng
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fmt
randomcheng
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Merge remote-tracking branch 'upstream/master' into k8s-version
randomcheng
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fix test error
randomcheng
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