cloudhub enhancement

[spambot000]

What type of PR is this?

/kind documentation

What this PR does / why we need it:

Enhance access control of CloudHub API

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

1. Some edge nodes with older version certificates may not be authenticated by cloudcore if this feature is turned on.

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[Shelley-BaoYue]

If you need to update vendor, you should update go.mod file and then execute hack/update-vendor.sh and update-vendor-license.sh.

[spambot000]

@Shelley-BaoYue I've updated the package authorization and added some test cases.