`systemd-networkd` should be a `network` service provider

[anatol]

Currently dracut contains two modules that help to setup network at init time: network and systemd-networkd. Users suppose to use only one of the modules to enable network functionality.

Some third-party modules (e.g. clevis-pin-tang) need network and specify network module as a requirement. This unfortunately pulls the network module even on the systems that configure systemd-networkd.

dracut need to be able to specify module A provides network functionality so clients should not care about choosing a particular network module implementation.

[shaba]

Please, use network.target (or network-online.target). Not network.service.
network.target should include any network service, as network-scripts or NetworkManager or systemd-networkd or ConnMan.

[johannbg]

The scope of the pull request I will be working on will be so that systemd-networkd module will be made independent so it can be swapped out with NetworkManager, Wicked and iwd ( which I plan on introducing as well )