* [Feature][plugin] Add k8s task in task plugin * [Feature][plugin] fix dos and code problems * [Feature][plugin] refactor some code based on sonar * [Feature][UI] front-end for k8s task plugin * [Feature][plugin] delete some front files * [Feature][plugin] update document * Update docs/docs/zh/guide/task/k8s.md * Update docs/docs/en/guide/task/k8s.md * Update docs/docs/en/guide/task/k8s.md * Update docs/docs/en/guide/task/k8s.md * [Feature][UI] front-end change from review comments * [Feature][UI] replace get namespace list api * [Feature][plugin] change file name * Add kubernetes to zh task list Co-authored-by: hezhao2 <hezhao2@cisco.com> Co-authored-by: William Tong <weitong@cisco.com> Co-authored-by: Jiajie Zhong <zhongjiajie955@gmail.com>