spec: fix typo in summary

Signed-off-by: Richard Marko <rmarko@fedoraproject.org>
tests: move CmdLine to faftests module

Signed-off-by: Richard Marko <rmarko@fedoraproject.org>
cmdline, add optional 'required' for opsys(release)

Signed-off-by: Richard Marko <rmarko@fedoraproject.org>