Splitting from T287380: Decide on the future of DPL.
https://www.mediawiki.org/wiki/Extension:GoogleNewsSitemap is enabled on all Wikinewses (including ruwikinews) and testwiki.
We should analyze:
- What queries this extension makes, and what their worst case performance is (tagging DBA for assistance with this)
- Whether any other preventative measures like concurrency limiting (aka T263220: Limit concurrency of DPL queries) are needed