Remove k8s.io/kubernetes dependency for yurtctl

[Rachel-Shao]

What type of PR is this?

/kind feature

What this PR does / why we need it:

Relying directly on k8s.io/kubernetes didn't seem like a good idea, which made our project difficult to upgrade and maintain. It's better that eliminate dependency on k8s.io/kubernetes.

Which issue(s) this PR fixes:

Fixes #550

Special notes for your reviewer:

I did not change the relevant code in yurt join/init/reset, because it involves a huge amount...For other parts, I unified the relevant functions in pkg/util/kubeadmapi/kubeadmapi.go

Does this PR introduce a user-facing change?

none

[openyurt-bot]

Welcome @Rachel-Shao! It looks like this is your first PR to openyurtio/openyurt 🎉

[rambohe-ch]

@Rachel-Shao Very appreciate for your pull request, agree with you that eliminate dependency on k8s.io/kubernetes. please fix the comments and golang lint error.

[rambohe-ch]

@Rachel-Shao please fix go vet error.

[rambohe-ch]

@Rachel-Shao we should do not import k8s.io/klog, and please use k8s.io/klog/v2 instead.

[Rachel-Shao]

@Rachel-Shao we should do not import k8s.io/klog, and please use k8s.io/klog/v2 instead.

@rambohe-ch I actually use k8s.io/klog/v2 in the code, not k8s.io/klog, do I still need to delete the k8s.io/klog package in go.mod?

[rambohe-ch]

@Rachel-Shao we should do not import k8s.io/klog, and please use k8s.io/klog/v2 instead.

@rambohe-ch I actually use k8s.io/klog/v2 in the code, not k8s.io/klog, do I still need to delete the k8s.io/klog package in go.mod?

@Rachel-Shao maybe you can execute go mod tidy locally, and i think the dummy import(like k8s.io/klog) will be removed automatically.

[Rachel-Shao]

@Rachel-Shao we should do not import k8s.io/klog, and please use k8s.io/klog/v2 instead.

@rambohe-ch I actually use k8s.io/klog/v2 in the code, not k8s.io/klog, do I still need to delete the k8s.io/klog package in go.mod?

@Rachel-Shao maybe you can execute go mod tidy locally, and i think the dummy import(like k8s.io/klog) will be removed automatically.

@rambohe-ch done! plz approve running workflows:)

[rambohe-ch]

/lgtm
/approve

[openyurt-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Rachel-Shao, rambohe-ch

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