beta: parsoid switch to jenkins deployed parsoid

Parsoid will be deployed by a new job under /srv/deployment/parsoid,
this patch make it possible to adjust the NODE_PATH in the upstart
configuration so it points to the 'deploy' checkout.

Change-Id: I8e0bed78fdeac765dec25a0f8b865dd6ade38e36
Merge "beta: parsoid switch to jenkins deployed parsoid" into production