test: sync test/data from xkeyboard-config 2.9

Needed for some tests. The tests need some adjustment, mostly because of
the resolution of xkeyboard-config bug
https://bugs.freedesktop.org/show_bug.cgi?id=50935

Also add the 'ch' symbols file for future tests.

Signed-off-by: Ran Benita <ran234@gmail.com>