Originaly created by Radovan Brezula ( http://brezular.com/2014/07/12/vyos-x64-installation-on-qemu/ )
yum install -y telnet
yum install -y expect
chmod a+x deploy_vyos
chmod a+x install_vyos
./deploy_vyos
qemu-img convert vyos-1.1.0.x86_64.qcow2 -O vmdk vyos-1.1.0-`date '+%Y%m%d'`.0.x86_64.vmdk