reconciled version pin differences between 4.3.2-pending and final
move buildout to a three-instance configuration instead of a four-instance, adjust memmon memory ceilings, haproxy settings; haproxy appsession from 1 day to 1 hour
upiq.cfg: added Arecibo back in for now, we can deal with migrating to Sentry at a later time
go back to using dumppickedversions, since we are not using buildout 2 yet
Merge branch 'master' of github.com:upiq/plonebuild