The openstack manifests tests use an install config with the
clusterID field that is no longer supported by the installer.
Changes to the installer to enforce strict unmarshalling of the
install config is in place but is being hindered by the openstack
manifests tests in this PR.
https://github.com/openshift/installer/pull/5307
With this change, Compute nodes within each MachineSet are automatically
created in a Server group, with a default policy of
"soft-anti-affinity".
With this change, a "serverGroupPolicy" can be set in install-config, on
the worker MachinePool and/or in the platform default.
Implements OSASINFRA-2570
Co-Authored-By: Matthew Booth <mbooth@redhat.com>