[tor-relays] BWauth no-consensus state in effect

FYI list

https://trac.torproject.org/projects/tor/ticket/16696

Description

At present both 'longclaw' and 'maatuska' have dropped out of the BW consensus ('longclaw' is restarting with new version, not sure about 'maatuska').

This has caused the BW consensus logic to revert to using relay self-measurement for BW weightings due to fewer than three BW authorities participating.

The 10000 cap placed on self-measure values is causing super-fast relays serious demotion and slower relays corresponding promotion in the consensus weighting.

Possibly this may result in network unbalance issues. Some adjustment of the logic seems in order.