Split out the network-scripts
    
    The network-scripts are now removed from the RHEL 8 base installation (and
    possibly Fedora too). Let's remove them, so that we don't drag in the legacy
    scripts when we don't need them (e.g. invoking through NetworkManager or
    pptp and the like).
    
    The boolean weak dependency is utilized to make life easier for those still
    relying on the legacy network service and to avoid breakage on upgrades.