Fix problems with redis test daemons in cucumber when using redis 2.8

* ps aux does no longer show the redis config file name, so let's just match on the port
* use existing daemon controller stop/start methods to perform a restart
* use restart instead of just start to avoid "already started" errors
Avoid I18n warning in tests
Be more specific about required cucumber, daemon_controller and minitest versions

These are the ones that currently work fine to run the full test suite