scrooge-generator: Fix the sbt build
scrooge-generator: Fix the sbt build

RB_ID=804026

thirstycrow/scrooge,twitter/scrooge,twitter/scrooge,twitter/scrooge,thirstycrow/scrooge,thirstycrow/scrooge,thirstycrow/scrooge,twitter/scrooge,thirstycrow/scrooge