enovance/edeploy-roles — pull request #55 by EmilienM (2014-05-21 21:51:57+00:00)
Title: I.1.0.0: Evacuate instances during compute upgrades

When upgrading compute nodes, migrate VMs hosted on the compute to
another compute randomly and ensure the VM is migrated before running
the upgrade.
It avoid to have downtime during the upgrade to Icehouse.