message: .gitmodules: Use relative path for elle's url.
diff: [submodule "drake"]
  path = drake
  - url = git@git.infinit.io:drake
  + url = ../drake
  fetchRecurseSubmodules = false
  [submodule "elle/src/elle/json/json-spirit"]
  path = elle/src/elle/json/json-spirit
  