beta-parsoid-update job

Meant to be run directly on the deployment-parsoid2 instance which is
now a Jenkins slave. That basically fetch the repositories, copy the
content under /srv/deployment/parsoid then restart parsoid.

The configuration file is managed by puppet and maintained at
/srv/deployment/parsoid/localsettings.js

bug: 57233
Change-Id: I1ec5e18d46cec8a897ede21110a863db643a3507