Support for tls-server-name kubeconfig property

**What would you like to be added**: There exists a property `tls-server-name` available to a kubeconfig context ( [docs](https://kubernetes.io/docs/reference/config-api/kubeconfig.v1/#Cluster) ) It is supported in the [kubernetes client library](https://github.com/kubernetes/client-go/blob/37045084c2aa82927b0e5ffc752861430fd7e4ab/plugin/pkg/client/auth/exec/exec_test.go#L701) I would like support for this to be added for this flag **Why is this needed**: When using security software to control access to kube-apiservers kuttl cannot currently be used.