Now check for which service is handling wired network interfaces.
Needed by the TUI which still handles static IP configurations for
wired connections.
TODO: Once NetworkManager is the new OS default, we can explore
configuring wireless interfaces via the TUI as well.
TODO: Consider change the other systemctl calls to use new dbus.
Dropping coverage requirement for this build
Signed-off-by: Mark D Horn <mark.d.horn@intel.com>