DatabaseEngine.updateEntity(DbEntity) should create prepared statements even with a NONE schema policy

[rfer]

Using DatabaseEngine.updateEntity(DbEntity) with a NONE schema policy doesn't create the corresponding prepared statements nor adds the entity to the list of known entities. This is a requirement to be able to persists new entries.

[HiuKwok]

This is fixed on a7225e9aa75f011c84f3ba99adcfbf28e83e077c :)