Add a new example that spins up a set of threads to simulate
the actual workers and producers that would be normally attached
to a jobboard and use these threads to producer and consume a
set of simple jobs (that are filtered on by the workers).
- This also fixes how python3 removed the __cmp__ operator which
we were using for sorting the jobs that were posted and now we
must use __lt__ instead.
Fixes bug 1367496
Part of blueprint more-examples
Change-Id: Ib8d116637b8edae31e4c8927a28515907855f8bf