Theodor Nolte

For convenience I marked the failing test to be skipped when running pytest to make the unit tests passing. This even makes the [arguments](https://github.com/pyca/pyopenssl/pull/636#issuecomment-307547980) of Lukasa more obvious.

Related Pencil-3 follower issue: https://github.com/evolus/pencil/issues/140 including a workaround.