In legacy/trac#5040, Karsten suggested to add yet another line for measuring obfsbridge stats. He wants a `dirreq-v3-transport` line with the exact same format as `bridge-ip-transports`, that counts consensus fetches instead of direct connections. This will improve the granularity of bridge statistics, and it will help us count users accurately in scenarios like flashproxy (where each client is actually a flashproxy bridge). This means that we should be considering the `GEOIP_CLIENT_NETWORKSTATUS_V2` and `GEOIP_CLIENT_NETWORKSTATUS` events in this case, instead of `GEOIP_CLIENT_CONNECT`.