Bump src/rep

Bump cloudfoundry-incubator/rep:
  Simon Leung:
     Go back to vendoring all test dependencies ( Travis Success: https://travis-ci.org/cloudfoundry-incubator/rep/builds/31065192 )
     Install gomega in scripts/test ( Travis Failed: https://travis-ci.org/cloudfoundry-incubator/rep/builds/31064676 )
     In scripts/test don't assume ginkgo is already downloaded ( Travis Failed: https://travis-ci.org/cloudfoundry-incubator/rep/builds/31063772 )
     Update godeps ( Travis Failed: https://travis-ci.org/cloudfoundry-incubator/rep/builds/31062540 )
  Max Brunsfeld:
     In LRP stopper, delete actual LRP after deleting container ( Travis Failed: https://travis-ci.org/cloudfoundry-incubator/rep/builds/31062234 )