Prefix scope test names with "test_scope"
Prefix scope test names with "test_scope"

Tbis makes it easy to test them together, e.g.:
```
rails t test/models/name_test.rb -n /test_scope/
```

MushroomObserver/mushroom-observer,MushroomObserver/mushroom-observer,MushroomObserver/mushroom-observer,MushroomObserver/mushroom-observer,MushroomObserver/mushroom-observer,MushroomObserver/mushroom-observer,MushroomObserver/mushroom-observer