Let the make manifest work properly

[wangyang0616]

Remove vendor #2863 cleans up the vendor directory in the code warehouse, but some scripts in the CI project depend on part of the content in the local vendor. After the pr is merged, the CI operation fails.

The current pr fixes the problem of CI running failure:

1. When the make manifest is executed, the advanced go mod vendor builds locally. The current method may not be the optimal solution, but it can ensure the normal operation of CI first, and then consider the optimization of the make manifest
2. The generate-code check uses the script in the hack directory
3. verify-vendor.sh

[xiao-jay]

@wangyang0616 change suggestion
1、https://github.com/volcano-sh/volcano/blob/master/hack/update-gencode.sh#L29
should change from bash vendor/k8s.io/code-generator/generate-groups.sh to hack/generate-groups.sh
because hack/verify-gencode.sh will exec "${SCRIPT_ROOT}/hack/update-gencode.sh"
2、https://github.com/volcano-sh/volcano/blob/master/Makefile#LL159C2-L159C23
sbould change form hack/verify-vendor.sh to hack/verify-gomod.sh

[lowang-bh]

update-gencode.sh also rely on vendor.

I think we need to search where vender is used and solve them. such as verify-vendor-licenses.sh, hack/update-gencode.sh and hack/update-vendor-licenses.sh.

[hzxuzhonghu]

why remove this verify

[wangyang0616]

This check is mainly to determine whether the vendor in the local directory is the latest version.

The vendor directory has been removed from the code warehouse, so this check can also be removed

[hzxuzhonghu]

oh, good to know

[william-wang]

/lgtm

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