change output schema

change the 'text' string which is returned by the suggester 'output' to be in the following format:

```
poi_name, (local_admin || locality || neighborhood || admin2), (admin1_abbr || admin1 || admin0)
```

eg:
https://github.com/pelias/suggester-pipeline/blob/output_schema/test/fixtures/fixture3.json#L41