Integrate script merge request
I think this merge request is ready, but I'm unsure if there's any subtleties of spark/airflow that I'm missing.
The accompanying file that actually calls this script is located at https://gitlab.wikimedia.org/htriedman/airflow-dags/-/blob/dp/analytics/dags/differential_privacy/country_project_page_daily.py. I'm also going to do a MR on that file.