- Network configuration (such as IP addresses, default gateway...) shall now be set up beforehand. It is not done by the base class anymore. We now simply use the IPs from configured interfaces.
- Reworked +Fixed some things in Neutron networking services too.

Moved nova::etwork::neutron configuration from nova/compute to nova/common since it is required to tell Nova to use Neutron secgroups.

Removed database_idle_timeout as it is not necessary anymore since 6f05de06 and updated two HAProxy IP addresses

Added/Fixed Neutron services for server/router/client. The router works well even when we only have one NIC

Small fixes such as hiera.yaml link, variable renaming and Neutron missing class / wrong default password

Added Keystone, Glance, Cinder, Nova, Neutron API services & Added Galera/RabbitMQ to Load-Balancing.
(The commit is pretty big, sorry about that, I'm still bootstrapping the project)