Use lxml on tests since pyxml was removed (from our build).

   A side effect is the usage of double quote rather them single quote when parse the response, but it is quite minimal change (no impact in production or API, only for this particular test)

    The welcome message can be customizes across projects so we assert the least as possible in relation to the message body.

See merge request nexedi/slapos.core!420

   Unify constraints to check if reference is Unique under SlapOSReferenceConstraint

   Before the introduction of ERP5 Login, it would require to check if reference was unique, by checking also Person documents. This isnt required anymore, since ERP5 Login/Certificate Login and user_id has its own code to check if user is Unique.

   It is essential that reference is Unique, since it is widely used for security and SLA.

   This replaces one alarm present on slapos_administration to detect it, now we may rely on checkConsistency checks.

   This replaces one alarm on slapos_administration for the same purpose

See merge request nexedi/slapos.core!422

   For now keep a BIG list, so we can track better later (once we drop unused code).

    Check if all python scripts and ZSQL Method is present on at least a Test Component.

    This is far from perfect, but at least it gives an overview on what is untested.

    This tests replaces the python script for the same purpose ERP5Site_testPythonScriptTestCoverage

See merge request nexedi/slapos.core!421

   Due slow indexation (on concurrent requests) the values on catalog can be outdated whenever getSucessorRelatedList is called

See merge request !419

See merge request !418

    The website value is set on the tests (but not present on live tests) so make the tests complay with both.

   It is not meaningful anymore, since the payments are mostly related to Subscription Requests

See merge request nexedi/slapos.core!417

   Once a week send an email to remind the user he has pending tickets to respond.

  This is generally useful to debug as Manager

See merge request nexedi/slapos.core!416

  Include action for Incident Report Module

   Some tests were moved from testSlapOSCRMSkins since the scripts were moved along

   Make things consistent with the others RSS forms.

   This script is widely used accross the listboxes, this makes things quite slow.

   Set 5min cache also prevent abuse of call the feed

See merge request !415

to fix packaging issue with 1.8.1

See merge request !414

See merge request !413

   The transition should be excessively called since it creates an entry on workflow history. So we could skip the expensive call by pre-checking before all it, rather then let the API skip itself.

See merge request nexedi/slapos.core!412