Added testing for set modes APIs in field image header. https://tracker.physiomeproject.org/show_bug.cgi?id=3662
Added testing for set modes APIs in field image header. https://tracker.physiomeproject.org/show_bug.cgi?id=3662

OpenCMISS/zinc,OpenCMISS/zinc,OpenCMISS/zinc,hsorby/zinc,hsorby/zinc,hsorby/zinc,hsorby/zinc,OpenCMISS/zinc