Prepare v0.8.2

[tenzen-y]

I tried to release v0.8.1 with the previous release flow, but couldn not do that due to GitHub immutable release enforced by CNCF organization.

So, I will re tag and re-release the previous changes as v0.8.2.

part of #820

[tenzen-y]

/cherry-pick release-0.8

[google-oss-robot]

@tenzen-y: once the present PR merges, I will cherry-pick it on top of release-0.8 in a new PR and assign it to you.

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In response to this:

/cherry-pick release-0.8

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[terrytangyuan]

/lgtm

[tenzen-y]

/approve

[google-oss-prow]

[APPROVALNOTIFIER] This PR is APPROVED

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[google-oss-robot]

@tenzen-y: new pull request created: #826

Details

In response to this:

/cherry-pick release-0.8

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.