Fixed db cleanup tests

Cleanup is currently just enabled if autodownload is enabled

app/src/androidTest/java/de/test/antennapod/storage/DBCleanupTests.java

@@ -82,6 +82,7 @@ public class DBCleanupTests {
         SharedPreferences.Editor prefEdit = PreferenceManager.getDefaultSharedPreferences(context.getApplicationContext()).edit();
         prefEdit.putString(UserPreferences.PREF_EPISODE_CACHE_SIZE, Integer.toString(EPISODE_CACHE_SIZE));
         prefEdit.putString(UserPreferences.PREF_EPISODE_CLEANUP, Integer.toString(cleanupAlgorithm));
+        prefEdit.putBoolean(UserPreferences.PREF_ENABLE_AUTODL, true);
         prefEdit.commit();
 
         UserPreferences.init(context);