tree 4316e9041d80e55b177efd7955787af84a091501
parent c225b4dcf4fa259eb0ce651438cb7e5f8fc4a525
author James E. Blair <jeblair@openstack.org> 1374189813 -0700
committer James E. Blair <jeblair@openstack.org> 1374192239 -0700

Improve precedence test

The jobs were starting in the correct order, but because they all
ran in parallel, they had a race to finish, and the build history
is built from finished jobs, which is what the test checked.

Instead, only allow one job at a time to run.

Change-Id: Ie09369d7c27b286c2339c9cc40658f8d5f629488