Multi-node grenade jobs will fail if we upgrade nova as the minimum
required API for nova to communicate with ironic was upgraded.
Our goal for multi-node grenade is to test rolling upgrades. The
scenario we envision for rolling upgrades to be done is:
1) Upgrade ironic-conductor services one by one. This means old
ironic-api services communicating with new and old
ironic-conductor services. This is what the multi-node grenade job
tests.
2) Upgrade ironic-api services.
3) Upgrade nova
In this upgrade procedure we should not be running updated nova with
old ironic-api services. This patch fixes that.
Closes-Bug: #1706418
Change-Id: I85c607ae7d031e4cabcb505915aca7e88df166aa
9d161f6922