Trajectory-based controllers did not work in flight tests

[ybeyer]

The Dragonfly autopilot (control/autopilots/dragonfly) did not work on Hardware (see also in LADAC-Examples: https://github.com/iff-gsc/LADAC-Examples/pull/2). It was tested for Minnie (Matek H743) and Bebop 2. In both tests the unexpected behavior occurred as soon as the Simulink flight mode was enabled. Unfortunately, there are no logs for Bebop 2. The logs of Minnie did not reveal any performance issues. Note that the flight mode worked well in SITL.