Fix frome tests (again)

This allows locking files in the /tmp folder during tests, easing strict apparmor rules with dbus as well as fixing changed states in the tests implementation

https://phabricator.apertis.org/T8629

changed target branch from apertis/v2021-updates to apertis/v2021

merged

mentioned in issue infrastructure/apertis-issues#46 (closed)