Added Online Cloud configuration file for systemd-networkd

With the default eth0.network created at post install time of systemd(v217), systemd-networkd is quite unhappy, it goes berzerk and eat 100% of a CPU without any error messages (the bug might be upstream).

This configuration file make systemd-networkd behave normally and make it set both dns and domain at boot time.

For the record, at v217 the default file created with the arch-package of systemd create an eth0.network file that should make systemd configure its IP through DHCP.