Use proper unit test API and minor clean up for style

   Too much old dates generate large trees that end up bloating
   the instance without a major gain, while running a multiple
   types of tests.

   Deduplicate code since this code is written every where for no major reason.

  usage of delivery_movement_simulation_interaction_workflow is forbidden on this project

  Only launch caucase when needed.  Not all tests need
  caucase, this saves a bit the overhead to run it

The regression comes from b0031eeb
which changed the getConnectionParameterDict behaviour.

  follow changes done on upstream for erp5 code.

  Use from slapos.util and convert str to bytes (as expected on python3)

   Probably this was based on some outdated version, since the calculation already changed on:

       erp5@6ded2571

  This solves a lot of warnings in python3

No need to fetch all parameters if not accessed.
This will speed up the recipe.request.

No need to access invalidated instances.

Also try to reduce conflict, and try to not block indexation activities.

 - fix the test failure introduced recently
 - fix grammar
 - log the software URL without ... at the end, so that we can click
   the link or copy it more easily

No need to install all officejs bt5.