With the switch to systemd-networkd the veth pairs for flat networking
and lbaas aren't created. This creates veth pairs if the server has the
appropriate server_networks defined.
* Create the veth network files
With this simple Match directive networkd will bring the interface up.
Change-Id: I0ae4375be128594a861c18aa33a98378859dd9d3
With bionic we need to switch to systemd-networkd rather
than the legacy /e/n/i. This makes the mnaio host networkd only,
since we will only be supprting xenial and beyond on the host we
can do this. The VM's will detect the networking configuration
daemon and act appropriately. This also brings up the IPs on
the bridges without having any interfaces attached.
Change-Id: I72283a2786316181f7ab7d8aad21ad456e9c9503