bump rep
bump rep

Submodule src/github.com/cloudfoundry-incubator/rep 811c674..0e57c5b:
  > generator encapsulates executor client for streams
  > auction cell rep does not start tasks
  > nix extra Album type

Signed-off-by: Ted Young <66c8979f4bb24f9b49cd80cbed4f06a51450d4f8@pivotallabs.com>

cloudfoundry-incubator/diego-release,cloudfoundry-incubator/diego-release,cloudfoundry-incubator/diego-release,cloudfoundry-incubator/diego-release