Ignat Harczuk

When using kubectl the go library defaults to [reading both settings](https://github.com/kubernetes/client-go/blob/master/tools/clientcmd/api/types.go#L84), but the python client only reads the certificate-authority setting in the [get_cluster_info](https://github.com/kubernetes-client/python/blob/master/kubernetes/base/config/kube_config.py#L553). I found test cases mentioning [certificate-authority-data](certificate-authority-data) but...