bump rep
bump rep

Submodule src/code.cloudfoundry.org/rep 6fa3e35d..a3fa71bb:
  > Revert the json serialization of the TaskGuid and Domain fields

Signed-off-by: Chris Piraino <f047703f03f13cc8e1b226aa8ba85c2dfc238f94@pivotal.io>

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