Commit 42b2f35d36 was meant to test all four combinations of
serial-pipe-{server,client}-{app,vm} files, but did only add the files and by
mistake duplicated the tests. Those were later removed as duplicates, so add
them back in.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
