bump rep
bump rep

[finishes #154486141]

Submodule src/code.cloudfoundry.org/rep e226c326..20e2df3e:
  > Revert previous change: http server should be part of the ifrit group

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