Fix IO tests

Once ramsis.io is part of ramsis.datamodel:

ramsis.io has a couple of tests which are failing. This was already the case when ramsis.io war part of RT-RAMSIS.

Those test need to be fixed

added Bug + 1 deleted label

mentioned in issue rt-ramsis#102 (closed)

added 1 deleted label and removed 1 deleted label

assigned to @schmidni

added 1 deleted label and removed 1 deleted label

changed milestone to %Sprint N°6-22

changed time estimate to 1d

unassigned @schmidni

removed milestone %Sprint N°6-22

changed milestone to %Sprint N°9 - 22

assigned to @schmidni

changed time estimate to 3h

mentioned in merge request !45 (merged)

closed with commit e660ccd5

added 3h of time spent

mentioned in commit e660ccd5