Changes

tests/diff: fix the test when the first NUMA node is CPU less

NUMA differences may actually appear before PU differences if
the first NUMA node is CPU less.
Handle both orders in the assertions.

Thanks to James D. Trotter for reporting the issue.
Closes #374.

Signed-off-by: Brice Goglin <Brice.Goglin@inria.fr>
(cherry picked from commit 806a8c2a8eeea73c8a18d1a4da265a6c9e5ae247)