reloading environment before builder.sh

let's see if this solvers the problem with the missing
"rocks" environment

Signed-off-by: Luca Clementi <luca.clementi@gmail.com>
Let's try to send the local ssh key to the remote machine

I want to use this key to copy output files over to other
remote machines, for inspection

Signed-off-by: Luca Clementi <luca.clementi@gmail.com>
Fixed reload env problem, save some space