Provide fallback mirror data in Metrics
Tor's fallback mirror list changes regularly. Relay Search also provides the information per relay based on a manual update process and local data. This process should be improved and automated in the following way:
- All fallback mirror lists should also be provided by CollecTor (including historic lists).
- Parsing functionality for these lists should be provided as part of metrics-lib.
- And, finally, based on the above, Onionoo should provide the information enabling Relay Search to simply query Onionoo instead of maintaining its own list.
This is the summary ticket for discussion of overall approach and timing. The child tickets take care of the actual implementations in the various Metrics products.