Fix requirement install (session argument) + others

- Need to avoid the usage of this really old virtualenv
  version 1.10.1. (Installed by sfstack)
  sudo pip install -U tox virtualenv
- Use sorted in unittest at some place because
  after the update of tox and virtualenv order returned
  in tests changes. So consolidate tests.
- Fix missing file for new edeploy version
- Fix jenkins-jobs usage for new PermissionDenied on .cache directory

We need to update our slaves, sfstack code and SF doc.

Change-Id: I3cb53dd4620fb5b4c17e05a655845e8ecee292c5