This also changes from running the unit tests, which are now run as part
of the rpm build, to running ksvalidator and ksflatten on some test
kickstarts.
./tests/good-ks/ contains kickstarts expected to pass
./tests/bad-ks/ contains kickstarts expected to fail
./tests/include-ks/ contains kickstarts expected to pass, with includes
(note that the %include directives in good-ks are not processed by
ksvalidator).
Related: RHEL-61432
