optional object name manipulations for import

While importing, table (and other object) names are added to the schema with their original names.

In our previous virtual database we imported two schema's that contain the same objects but one is a production and another is a historical database.

We then change the name for e.g. table1 to prod_table1 or wh_table1 according to the schema it came from. Some software that interacts with teiid can not distinguish between different schemas and can not handle duplicate table names. So for this reason, this would also come in handy.

It would come in handy if it is possible to add a prefix to names while importing objects.