Comment 1 for bug 1691758

think the root cause here is:

09:45 <@slagle> shardy: alright, i see the issue now. that envrionment (deployed-server-bootstrap-environment-centos.yaml) shouldn't even be getting added when deploying newton, but due to how "multinode-upgrades" is parsed
                in toci_gate_test-orig, it gets added to deploy args before we reset STABLE_RELEASE to newton

09:50 <@slagle> shardy: we could do something like check $UPGRADE_RELEASE there