add simple pgpool setup that cohabitates with the postgresql nodes
create individual virtual machines for pgpool cluster
fixup pgpool configuration when independent of postgresql
so yaml
separate vagrant provisioning for the pgpool servers
remove unnecessary minion configuration
add module for plucking interfaces which have addresses on a subnet
keepalived state for pgpool

only supports sharing an IP between pairs for now
Merge pull request #3 from python/pgpool

Implement a pgpool-II/keepalived pair to sit in front of the PostgreSQL cluster.