vagrantbox improvements

vbox6 in bionic

+ add 5GB more in the vm


d-i pkgsel/include string openssh-server nfs-common ntpdate ntp vim ansible build-essential apt-transport-https curl snapd docker-compose virtualbox-guest-x11 git vanilla-gnome-desktop linux-generic-hwe-18.04 xserver-xorg-hwe-18.04 

cat /etc/apt/sources.list.d/disco.list 
deb http://ubuntu.cica.es/ubuntu/ disco main restricted universe multiverse


cat /etc/apt/preferences.d/disco.pref
Package: *
Pin: release o=Ubuntu, a=disco
Pin-Priority: 50

apt-get update
apt-get install -t disco virtualbox-guest-utils-hwe virtualbox-guest-x11-hwe
apt remove --purge libreoffice-*
apt remove --purge linux-image-generic