fix helm crd can not generete error

[tangming1996]

What type of PR is this?
/kind bug

What this PR does / why we need it:
fix helm crd can not generete error
Which issue(s) this PR fixes:

Fixes #468

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[tangming1996]

After discussion in the regular meeting, Sedna has no immediate need for multi-version management at present. Therefore, this pull request (PR) will be closed temporarily.

[tangming1996]

/close

[kubeedge-bot]

@tangming1996: Closed this PR.

In response to this:

/close

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[MooreZheng]

The update of helm crd is fine. But more consideration is needed for the version issue in PR #471 Might launch a new PR.