Update the interwiki cache

The interwiki cache is a cache of the interwiki map page at Meta-Wiki, which maps interwiki prefixes to URLs.

How-To

To update it, run from /srv/mediawiki-staging/ in the deployment server the code below and follow the instructions:

you@deploy1001:/srv/mediawiki-staging$ scap update-interwiki-cache

You will be prompted to enter your gerrit username.
Next you'll be prompted to enter a Gerrit HTTP password for said account name (this is so Scap can upload a patch with the updated code on your behalf; see below for a patch uploaded using this plugin).
Scap will then upload said patch to Gerrit and +2 it. Wait until the patch uploaded is merged by jenkins-bot before continuing.

While waiting, you should see this prompt:

           ___ ____                                                 
         ⎛   ⎛ ,----                        
          \  //==--'                                                 
     _//|,.·//==--'    ____________________________                  
    _OO≣=-  ︶ ᴹw ⎞_§ ______  ___\ ___\ ,\__ \/ __ \                 
   (∞)_, )  (     |  ______/__  \/ /__ / /_/ / /_/ /                 
     ¨--¨|| |- (  / ______\____/ \___/ \__^_/  .__/                       
         ««_/  «_/ jgs/bd808                /_/                           
                       
remote: Processing changes: new: 1, done                             
remote:                                                              
remote: New Changes:                                                 
remote:   https://gerrit.wikimedia.org/r/#/c/operations/mediawiki-config/+/xxxxxx Updating interwiki cache
remote:                                                               
Has your change merged yet? [y/N]:

Answer 'yes' once the patch is merged so the deployment can continue. Scap will take care of continuing with the deployment.
Congratulations! You've successfully updated the interwiki cache.

A patch uploaded when using this script.
task T197549 - a request to update the interwiki cache.
task T192469 - somewhat shows the output of the scap update-interwiki-cache (in a different context).
task T197166#4295654 - the script will fail if you do not have +2 rights on the operations/mediawiki-config.git repository.

How-To

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