* Only update_jobs uses the parallel features right now
* --workers N
- If set to 0, it will use parallel execution and
use the number of cores in the machine as thread count
- Any other value enables the parallel extensions and sets the
number of concurrent threads to that value
- Will use 1 by default
Add some tests to make sure the parallel execution helpers work as
expected.
Change-Id: Ib0abd34ea7525f75fff4ff480287a6e589deba90
Signed-off-by: David Caro <dcaroest@redhat.com>