Adding a service specifically to create the PD and test app's dynamo rec...

...ords only, keeping their existing host names, Stormpath directories, etc. Switching over will go through these steps:

1. deploy this code all the way to production
2. create seven apps, 2 in dynamo only, 5 across the board, in each environment.
3. deploy again, switching over to new studies and deleting configuration for studies, removing the dynamo-only service as well, all the way to production
4. a couple of weeks from now, delete pd study using standard API in all environments.

This will leave 6 studies switched over.