One more executions test. This one will run a workbook that has a
nested workflow with a join all.
Change-Id: I107eaf3a666a4e07ea9364c4948c74704edc8276
To make Rally job work properly this patch adds all required files
As well it adds README that explains how it works
Change-Id: Ia196f1437c14f28fff3d66540d0591629e18bd5c