keepalive.sh: remove script
keepalive.sh: remove script

Some hosts we had refused to have the network start properly unless you
pinged a host from the host in question.

It was basically a workaround for that weird issue. It is a leftover
from the Vagrant VirtualBox days.

Signed-off-by: Oleksandr Kravchuk <da66fcdb9815331ae441a2bc352cef73cf081e1e@pelagicore.com>

Pelagicore/vagrant-cookbook,Pelagicore/vagrant-cookbook,Pelagicore/vagrant-cookbook