* Update k8s.io/[api|apimachinery|client-go] to v0.18.0

This PR updates k8s.io/[api|apimachinery|client-go] to v0.18.0

This PR closes 3791
This PR closes 3792
This PR closes 3793
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Fix test failures
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Fix failed tests
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Fix test failure
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>