... instead of relying on an external script to configure it.
This way, if OpenLDAP server is installed, `make ct-system` should work.
`TESTING.md` is updated with this new information.
It also means the following resources are now unused:
* The Docker and Vagrant files
* `setup.sh` and `seed.sh` in the `example` directory
Jean-Sébastien Pédron