ModeledFrameworkImpl.update() ignores version for uncompressed data

To reproduce:

1. Create a ZNode with uncompressed data through the mechanism of your choice, producing data version 0, then update that ZNode to produce data version 1.
2. Create a ModeledFrameworkImpl with default create/delete settings, then use the update(T, int) method with version 0.
3. Read the ZNode with the mechanism of your choice, and notice that version 2 has been created.