Add "set -e" to post_deploy_actions.bash
Add "set -e" to post_deploy_actions.bash

If there are any errors (e.g. permission problems preventing the
creation of ../node) we should exit as soon as that happens.

mysociety/popit,mysociety/popit,mysociety/popit,openstate/popit,Sinar/popit,Sinar/popit,openstate/popit,Sinar/popit,mysociety/popit,openstate/popit,Sinar/popit,mysociety/popit,openstate/popit