Database set_forest_names doesn't couple to existing forests

When creating a database, and setting the forest names on the db object, the existing forests are not coupled to the database.

```
{"errorResponse":{"statusCode":"400", "status":"Bad Request", "messageCode":"MANAGE-CONFLICTINGCONFIG", "message":"MANAGE-CONFLICTINGCONFIG: (err:FOER0000) A conflict has been detected: A forest with the name ciss-1 but different configuration exists."}}
```