beta: let mwdeploy run mwscript as the apache user

65d8e48 / https://gerrit.wikimedia.org/r/#/c/44548/ made the
mw-update-l10n script to run mergeMessageFileList.php as the apache
user.  The script is being run by the wmf-beta-autoupdater script which
run as mwdeploy, since that user is not allowed to sudo as apache, that
caused the following error:

i-00000390.pmtpa.wmflabs : Feb  6 18:25:45 : mwdeploy : 3 incorrect
password attempts ; TTY=pts/0 ; PWD=/ ; USER=apache ;
COMMAND=/usr/local/bin/mwscript mergeMessageFileList.php --wiki=aawiki
--list-file=/home/wikipedia/common/wmf-config/extension-list

This patch allow the mwdeploy on beta to sudo as apache with no password
when attempting to run mwscript.

Change-Id: Id71ba9ef210f340a873746da24f62def2dd91559
Merge "beta: let mwdeploy run mwscript as the apache user" into production