Cannot change camera settings in GNOME client on Fedora 22, Arch Linux

Issue generated from Tuleap's migration script. Originally submitted by: Stepan Salenikovich (ssalenik)

There seems to be a problem initializing the models in LRC which control the camera settings on newer systems (Fedora 22, Arch Linux, etc... work fine on Ubuntu 15.10). The models do not have a selection by default. When a selection is made, it seems to not impact the settings and a "no op" error is printed.

As a result, users cannot change the camera settings, like changing cameras or selecting the resolution in the client.
camera_settings.patch