centos 9 image build fails "service network: No such file or directory"

Testing the centos9 image build at [1] there is a failure during building of the overcloud-full image coming from [2] where we are explicitly starting the network service (for bug 1823353 [3]).

The trace (at [4]) looks like:

        2021-09-28 13:22:11.032 | dib-run-parts Running /tmp/in_target.d/post-install.d/51-enable-network-service
 2021-09-28 13:22:11.035 | + set -o pipefail
 2021-09-28 13:22:11.035 | + chkconfig network on
 2021-09-28 13:22:11.037 | error reading information on service network: No such file or directory

I posted [5] as a workaround for now to allow the image build to complete but I guess this is part of the wider issue with network manager vs network scripts? So for example will [5] be a workaround for now or is that the actual solution i.e. for C9 we just don't try to start the network service there (something something, network manager ?).

[1] https://review.rdoproject.org/r/c/testproject/+/35465/
[2] https://opendev.org/openstack/tripleo-puppet-elements/src/commit/594f608ca08fe1e10e8d236ecd5d4167277b0208/elements/overcloud-base/post-install.d/51-enable-network-service#L7
[3] https://bugs.launchpad.net/tripleo/+bug/1823353
[4] https://logserver.rdoproject.org/65/35465/3/check/tripleo-build-overcloud-full-stream9-development/42346a3/build.log
[5] https://review.opendev.org/c/openstack/tripleo-puppet-elements/+/811712