tests: Add cpu/{online,present} files for old tests

tests: Add cpu/{online,present} files for old tests

The functionality these tests partially relied on (scanning the cpu
directory for cpu[0-9]+ subdirectories) is going to be removed, so we
need additional files that are present on all non-medieval systems.
Removing all these tests would be an option but we would lose the
ability to test the topologies.  Even though we just extract number of
sockets/cores/threads from all these directory trees.

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>