Add vagrant env

vagrant-env/.gitignore

vagrant-env/README.md

vagrant-env/Vagrantfile

vagrant-env/db_creation.sql

vagrant-env/envs/debian9-x64-min.dsc

vagrant-env/kadeploy_conf/client.conf

vagrant-env/kadeploy_conf/clusters.conf

vagrant-env/kadeploy_conf/command.conf

vagrant-env/kadeploy_conf/sample-cluster.conf

vagrant-env/kadeploy_conf/server.conf

vagrant-env/kadeploy_conf/version

vagrant-env/kadeploy_provision.sh

vagrant-env/kalogger

vagrant-env/keys/id_deploy

vagrant-env/other_conf/dhcpd.conf

vagrant-env/other_conf/isc-dhcp-server

vagrant-env/other_conf/tftpd-hpa

vagrant-env/scripts/install_grub_g5k.sh

vagrant-env/scripts/partitioning.sh

vagrant-env/ssl/test.cert