[users at bb.net] Convert buildbot 0.8 sqlite database to postgresql

[Ryan Schmidt]

Our buildbot 0.8 installation uses sqlite, because that was the default and the easiest thing to do.

I now have a feeling that some of the performance problems we see from time to time -- such as the web interface timing out during those unusual instances when several thousand builds are getting scheduled at once -- might be due to that.

I'd like to move the database to postgresql. I couldn't find any buildbot-specific advice about how to import the sqlite information into postgres. Does documentation exist on how to do that?

http://docs.buildbot.net/current/manual/cfg-global.html#postgres

doesn't say anything other than "PosgreSQL requires no special configuration."