ssh configuration for password-less scripting / libvirt access

* on start, host generates and registers pair of keys 
* public keys deployed on compute nodes
* now we can ssh and virsh to the compute nodes
Fix: Make sure key creates with empty passprhase
Enable RabbitMQ notifications on compute, bug fixes...
Fix typo: now ssh deployment shall work.
Create network and few VMs at start-up
Fixed VM creation on client up. Time Vagrant.
Merge pull request #1 from dzimine/dev/with-ssh

Dev/with ssh