fix: allow AstraDB to prevent indexing on metadata columns with long text (#3003)
Thanks to @erichare from AstraDB
Adds support for specifying the indexing options for various columns in
Astra DB, allowing users to avoid a situation where long text columns
are by-default indexed.
Changes to: test_unstructured_ingest/python/test-ingest-astra-output.py
are forward looking from AstraDB