Update role for Nextcloud
See:
- https://www.elastic.co/guide/en/elasticsearch/reference/current/deb.html
- https://github.com/nextcloud/fulltextsearch_elasticsearch
- https://github.com/nextcloud/fulltextsearch_elasticsearch/wiki
- https://github.com/nextcloud/fulltextsearch/wiki/Basic-Installation
- https://www.elastic.co/guide/en/elasticsearch/plugins/current/ingest-attachment.html