Frank Märkle

The client certificates stored in [`resources/development/tls/`](https://github.com/eclipse-opendut/opendut/tree/e0a94fe9e91883adf2b9cb14dfdfd50495e84cef/resources/development/tls) should be generated automatically for use during development. As such, they should be included in `.gitignore` and therefore not be checked into Git anymore....