b20812678b
Add devstack multinode job. This job installs nova in a single cell as "late anti-affinity [1] doesn't work in multi-cells environment. [1] : https://docs.openstack.org/nova/latest/user/cellsv2-layout.html#operations-requiring-upcalls Co-Author: tpatil <tushar.vitthal.patil@gmail.com> Co-Author: yong sheng gong <gong.yongsheng@99cloud.net> Change-Id: I56a9cf4bb553c8026eec73212a3742d5eab17420