Check if Store is opened

* [AGDROID-182](https://issues.jboss.org/browse/AGDROID-182)
* [AGDROID-183](https://issues.jboss.org/browse/AGDROID-183)

Or just do it the right way and that is using
```
@Rule
public static ExpectedException exception = ExpectedException.none();
```

and then in the test just before you call the `store.reset` (after the store is created). You would also remove the try/catch.

```
exception.expect(StoreNotOpenException.class);
```