change RepositoryTestCase#setUp to final public void setup()

In quite a lot of unit tests you see the following pattern:

    @Before
    public void setUp() throws Exception {
        super.setUp();
        ...

The order in which @Before method are called is defined such that @Before in base classes is called before sub classes, see also this StackOverflow discussion (link).

A best practice that I'd like to introduce is to use final public void ... for @Before methods so sub classes don't accidentally hide an @Before of a base class.