Set connrotation dialer via restclient.Config.Dialer
Set connrotation dialer via restclient.Config.Dialer

Instead of Transport. This fixes ExecPlugin, which fails if
restclient.Config.Transport is set.

Kubernetes-commit: 3357b5ecf42db9bcf6e54c9d2b6712cfbae077bf

kubernetes/client-go,li-ang/client-go