In podman v4.0.0 the default network backend was switched from cni to
netavark. However, podman will choose cni if there are already
containers, images, or cni networks preset on a system [1].
Starting with podman v4.2.0, containernetworking-plugins is no longer a
hard requirement for podman. So when an edge commit is built with an
embedded container, podman v4.2.0+ will choose the cni network and fail
with an error because the plugin isn't installed.
Adding the package explicitly alongside podman to avoid this issue with
future RHEL 9.1 edge builds when they include containers.
This change does not affect test manifests. The package is already
included in manifests as a dependency of podman < v4.2.0.
See rhbz#2123210
[1] a083f790ab/pkg/config/containers.conf (L275-L278)
aed7808b03