Add Elastic alias for cleaner ingestion

[rachaelcodes]

Context

When ingesting our files, we should be making sure we remove old artifacts. The standard ElasticSearch approach is to use an 'alias' rather than 'index' as a reference, which allows us to update the index 'behind the scenes' without affecting users. I've started updating the file ingestion to reflect this.

Changes proposed in this pull request

• New django management commands to create and apply the new alias (via our q2 queuing system)
• A new jupyter notebook to simplify dev testing (I will remove this and the new jupyter dependency in a later commit)
• Fix references to elastic to make use of the alias rather than the index
• Update automated tests
• Check/update integration tests
• Move the jupyter notebook to notebooks for reference and remove the jupyter poetry dependency

Guidance to review

To try this out locally, try out the commands as a Scheduled Command from the local django admin in the order listed in the jupyter notebook:

• add_es_alias
• reingest_files
• change_es_aliased_index
• delete_es_indices

You can check the current list of indices via http://localhost:9200/_cat/indices and the aliased index via http://localhost:9200/_alias/redbox-data-{environment}-chunk-current

Alternatively, you can run the notebook from the /redbox/django_app directory after running poetry install and poetry run jupyter notebook

Relevant links

Things to check

• I have added any new ENV vars in all deployed environments
• I have tested any code added or changed
• I have run integration tests

[gecBurton]

should/could be part of Settings?

[gecBurton]

this is working me for me in dev. would be good to merge some of these commands into one as you suggest (but in a seperate PR)