interfaces

as the network interface transition to new names we can still get some
information from the system and use it in our template. This will not
change the name of the interface but it will configure it to our needs.

This commit includes the configuration of vlans on the host
for virtual machines. By configuring a bridge on the br0 interface
we can host the virtual machine vlan and by setting a vlan on the
logical device we can include it into the management vlan.
All variables are included from playbook