tests: test set for ivi-screen normal use case in server side
tests: test set for ivi-screen normal use case in server side

These tests are implemented on test suite framework, which provides
internal method validation.
Following features are tested,
- ivi-screen id
- ivi-screen resolution
- render order of ivi-layers in ivi-screen

Signed-off-by: Nobuhiko Tanibata <18823bc9af0967e11f18821cc68fb927efff8e88@xddp.denso.co.jp>
Reviewed-by: Pekka Paalanen <0f6ae7001e34c37b02fb2c1c2573ddf8f442136a@collabora.co.uk>
Reviewed-by: Jon A. Cruz <d4ae605477945a543a3ecda8955c93978db16a84@osg.samsung.com>

giucam/weston,Tarnyko/weston-xdg_surface_present,giucam/weston,kwm81/weston,krezovic/weston,Fantu/compositor-spice,Gnurou/weston,xorgy/weston,Gnurou/weston,Tarnyko/weston-xdg_surface_present,jonnylamb/weston,eyolfson/weston,mchalupa/weston,udoprog/weston,udoprog/weston,sir-murray/weston,Fantu/compositor-spice,eyolfson/weston,mchalupa/weston,jonnylamb/weston,sir-murray/weston,krezovic/weston,Fantu/compositor-spice,kwm81/weston,xorgy/weston