network_logs: Gather multus resource yamls for namespaces

Extend multus resource collection so that we gather all resources on a per namespace basis with oc adm inspect.
This way, users can create a combined must-gather with all resources in one place.

We might have to revisit this once the reconciler and other changes land in more recent version of multus, but for the time being I think that this is a good change to make that we can also bp to older versions