* Use single API
   * Unify usage of _simulateScript with the mixin

  This script is a copy the one on product/ERP5/bin/bigfile_client_example.py

   By respecting the dependencies, it is possible to use it on development
   environments to speed up a bit the setup.

  This code was unused since 7 years ago when it was written.

    If the user has just archived OSO, it means he destroyed everything (also).

   It allow us to use renderjs_runner UI for develop and run tests.

   You can create a Contract-Like Invitation, which a preset configuration to be applied into a cloud contract whenever the user input the Token or access it via a specific URL.

   WIP: Squash futher implemenations into this one

    Maximum Invoice Delay defines the delay after due date
    Maximum Invoice Credit defines the max amount after the due date before stop the instances.

  Upgrade dump configuration to help to detected long ago local changes that
  can eventually can exist on production sites.

    - Added test for SubscriptionRequest_processConfirmed

   * Add tests for SubscriptionRequest_processStarted
   * Add tests for SubscriptionRequest_verifyInstanceIsAllocated

    It was rewritten to use a simplified shared API from the Test Mixin

    makeTree requests a simple deployed Hosting Subscription with all elementes, this only replaces the template used when generate the objects.

See merge request !243

The main part is to address the supervisor path too long we sometimes have with theia or slaprunner tests.

Some minor fixes are also included

See merge request nexedi/slapos.core!242