ansible: Add maintenance script to reset NPM cache volume
ansible: Add maintenance script to reset NPM cache volume

Occasionally, `npm install` starts failing like this:

    npm ERR! code ETARGET
    npm ERR! notarget No matching version found for @babel/generator@^7.19.3.

This happens when its cache gets corrupted.

cockpit-project/cockpituous,cockpit-project/cockpituous