the bare value must be converted to a updated property.
add also a test for this
Change-Id: I261daaaa8e12d7f739d8b2e8389c1b871b26c5b3
Reviewed-on: https://forge.frm2.tum.de/review/c/secop/frappy/+/34985
Reviewed-by: Markus Zolliker <markus.zolliker@psi.ch>
Tested-by: Jenkins Automated Tests <pedersen+jenkins@frm2.tum.de>