This PR make some changes to fix the zoom optics device tests on the CI.
update_onfrom the controller (which was discussed with @muzelle)
- Clean up the duplicated
magnificationproperty setter, and merge it together with
- Fix the test values
- Some typo
@mammeri, be careful of the change on
update_on. If there is a problem on the beamline, this have to be handled in a different way.