Release JHU fixes

[krivard]

• Geomapping issue
• Geomapping fix
• is_latest_issue issue
• is_latest_issue fix
• Proposed release version: hotfix

An announcement went out to the API mailing list on 17 October describing the JHU outage. The initial problem expanded to include many days of apparently-missing data. The outage ultimately had two causes: First, during geographical aggregation, we were including the population of the megacounty (=the state population) when aggregating populations from counties up to the state level, causing the apparent population of the state to be double its actual value. Second, a component of the data versioning system had become corrupted. This component tracks which issue is the most recent for each day of data. Without it, the system could not identify the most recent issues, and thus reported no data.

Remaining work:

• Run the is_latest_issue fix in production - @korlaxxalrok
• Regenerate the JHU cache - @krivard
• Run JHU - @krivard
• Reactivate the JHU task in Automation - @korlaxxalrok
• API mailing list notification - @Akvannortwick, cc @capnrefsmmat

[krivard]

Waiting to resolve problems identified in staging.

[krivard]

Fix is verified! remains is just the notifications to the list.

[krivard]

Mailing list notification went out November 3