This change extends the ipv6servers module to generate all relevant
data about servers (relays and bridges) that the legacy module
currently generates.
There are several reasons why this is useful:
- This change is a step towards implementing all statistics in Java,
without needing to call psql or other external tools from within
Ant. In fact, it's a step towards getting rid of Ant for executing
modules.
- The ipv6servers module already supports other statistics than
absolute server counts, namely advertised bandwidths. It's easy to
extend statistics to consensus weights and guard/middle/exit
probabilities. This prepares future graphs which can be added
quite easily.
- With these new statistics we can finally provide graphs on bridges
by version or platform. Or we can extend current graphs to display
both relays and bridges, if we want to avoid adding more graphs.
This commit does not yet remove any code from the legacy module. That
will be the next logical step. It will even be fun.
Implements #28116.
