Get betalabs localsettings.js file from deploy repo (just like prod)

* Removed puppet copy of the betalabs localsettings file.
* Updated parsoid manifest to pick up the deploy repo file.
* Updated parsoid production localsettings file path to use
  absolute path.

Depends on having the removed file to be added to the
mediawiki/services/parsoid/deploy repository:
  https://gerrit.wikimedia.org/r/#/c/166608/

Change-Id: Id83fec3e1afe5788f50601a53c22072b427e0c83