This patch adds a cron job to our mirror_update servers which will
begin mirroring the npm registry into our own AFS mirror directories,
under the /npm path.
It uses two major components: First, the registry-static project,
available here: https://github.com/davglass/registry-static
Secondly, a custom implementation of the fs-blob-store named
afs-blob-store, which creates a virtual filesystem that automatically
translates paths to accomodate AFS' folder size limit. This project
is currently still hosted on github, however will be added to
OpenStack soon: https://github.com/krotscheck/js-afs-blob-store
This will require creating ACL's as well as the AFS principal before
this can be landed.
Change-Id: Ib78852fc5cde4fb04fe6439e01a591ca2781ce21
841e7e2f57