Fix zoom to fix the CI
This PR make some changes to fix the zoom optics device tests on the CI.
- Remove
update_on
from the controller (which was discussed with @muzelle) - Clean up the duplicated
magnification
property setter, and merge it together with_move_motors
- 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.