Eliminate dependency on k8s.io/kubernetes

[SataQiu]

https://github.com/kubernetes/kubernetes#to-start-using-k8s

Use of the k8s.io/kubernetes module or k8s.io/kubernetes/... packages as libraries is not supported.

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

This is likely to be a long-term task.

[SataQiu]

/kind cleanup

[openyurt-bot]

@SataQiu: The label(s) kind/cleanup cannot be applied, because the repository doesn't have them

In response to this:

/kind cleanup

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.

[rambohe-ch]

@SataQiu Thank you for filing issue.
It's a good idea to cleanup dependency on k8s.io/kubernetes in openyurt. and would you like to take over this work?

[SataQiu]

@rambohe-ch
I'd like to help with this.
It seems a big job, and more contributors are welcome!
/kind good-first-issue

[openyurt-bot]

@SataQiu: The label(s) kind/ cannot be applied, because the repository doesn't have them

In response to this:

@rambohe-ch
I'd like to help with this.
It seems a big job, and more contributors are welcome!
/kind good-first-issue

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.

[rambohe-ch]

@rambohe-ch
I'd like to help with this.
It seems a big job, and more contributors are welcome!
/kind good-first-issue

@SataQiu It seems that yurt-controller-manager, yurtctl, yurt-tunnel have imported k8s.io/kubernetes, we can cleanup the dependency from yurt-tunnel --> yurtctl --> yurt-controller-manager.

[rambohe-ch]

This issue is divided into issue #548 #549 #550 #551 , so this issue can be closed now.