Stream Pipeline name space consistency

```nuxeo_1 | 2020-12-23T08:17:02,928 WARN [DirectoryRegistry] Directory template-directory redefined with different factory
nuxeo_1 | 2020-12-23T08:17:04,115 ERROR [ComponentManager] Component service:org.nuxeo.runtime.stream.service notification of application started failed: Invalid namespace: 'insight-ai'

nuxeo_1 | java.lang.IllegalArgumentException: Invalid namespace: 'insight-ai'```

enrichment-in coming from nuxeo.conf already contains a prefix. templates shouldn't introduce additional parameters.