Allow the Zuul "Depends-On" to work better. Adopting the solution developed by Doug Wiegley for LBaaS: c61f920f2a54fd829ee37484b3743ab77b909847 Closes-Bug: #1492882 Change-Id: I7505a8b2ace94a0fe0b438e346011482932a339a
Depends-On: I39db2918ea277b939f67d3c856f52bd53c226f27 Change-Id: Iea544d90ae617abbcc6087d558d3fd38fca61a8c