groupadd -r admin
usermod -a -G admin vagrant
cp /etc/sudoers /etc/sudoers.orig
sed -i -e '/Defaultss+env_reset/a Defaultstexempt_group=admin' /etc/sudoers
sed -i -e 's/%admin ALL=(ALL) ALL/%admin ALL=NOPASSWD:ALL/g' /etc/sudoers

# Set up sudo
echo %vagrant ALL=NOPASSWD:ALL > /etc/sudoers.d/vagrant
chmod 0440 /etc/sudoers.d/vagrant
# Setup sudo to allow no-password sudo for "sudo"
usermod -a -G sudo vagrant

echo vagrant ALL=NOPASSWD:ALL > /etc/sudoers.d/vagrant