Migrate the remaining Solr functions to ES before shutting down Solr.

[albertisfu]

I saw this error on Sentry: https://freelawproject.sentry.io/issues/5777983605/ which is related to the build_chart_data function in coverage_utils. The error has stopped, but I noticed that this helper function has not been migrated to ES.

We'll need to migrate it before shutting down Solr.

I also checked other functions that seem to require migration:

• court_count_query in api.views
• query_facets in api.views
• authored_opinions in people_db.views
• oral_arguments_heard in people_db.views
• recap_cases_assigned in people_db.views
• docket_pks_for_query in bulk_utils

There are also other Solr methods that require migration, but they are related to management commands:

• add_parallel_citations.py
• populate_opinions.py
• buried_alive_project.py
• invoice_project.py
• legal_robot.py
• cl_get_ftm_ids.py

We should determine if all of these commands are still active and if their Solr queries require migration.

[mlissner]

Thanks, Alberto. Supremely helpful. We can ignore all of the management commands for now — none of those are used regularly, so they're not worth our time.

For the rest, here's what I've come up with:

function	purpose	solution	difficulty
court_count_query	powers: help/api/jurisdictions/	rewrite with elastic	easy
query_facets	powers the the opinions coverage page	rewrite with elastic	easy
authored_opinions oral_arguments_heard recap_cases_assigned	powers the person page	rewrite with elastic	easy
docket_pks_for_query	two bulk commands	Punt. These commands aren't used much.	N/A

I don't think any of these needs waffles. I think they can just be put into prod now and we can rip out the old code.

Nice to see how close we are.