prow/cmd/mkbuild-cluster/main.go
func useContext(o options, ctx string) error {
	_, cmd := command("kubectl", "config", "use-context", ctx)
	return cmd.Run()
}
func useContext(o options, ctx string) error {
	_, cmd := command("kubectl", "config", "use-context", ctx)
	return cmd.Run()
}
// useContext calls kubectl config use-context ctx