bump rep
bump rep

[#164182084](https://www.pivotaltracker.com/story/show/164182084)

Submodule src/code.cloudfoundry.org/rep ae656793..efcbe165:
  > Re-add cfhttp.Initialize for dockerdriver

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