minor: simple qay of using h2 in unit tests

SVN: 12359

openbis/sourceTest/java/ch/systemsx/cisd/openbis/generic/server/dataaccess/db/AbstractDAOTest.java

@@ -87,6 +87,7 @@ public abstract class AbstractDAOTest extends AbstractTransactionalTestNGSpringC
         System.setProperty("hibernate.search.index-base", LUCENE_INDEX_PATH);
         System.setProperty("hibernate.search.worker.execution", "sync");
         System.setProperty("mass-upload-folder", "sourceTest/sql/postgresql");
+        //System.setProperty("database.engine", "h2");
     }
 
     static final Long ANOTHER_DATABASE_INSTANCE_ID = new Long(2);