Since we now handle empty model/layout, the last couple of tests should
not fail. The reason they do is bacause they try to use a non-existent
"base" rules file. When the file is brought in these tests do not fail.
Since we already test for non-existent rules file, we can remove them,
and refine the other tests a bit.
Signed-off-by: Ran Benita <ran234@gmail.com>