[QA] Browser tests failing because rubygems.org is down

[Gilles Dubuc]

Title says it all, in case you were wondering why there was a spike of
failures today.

Example of failed test:
https://integration.wikimedia.org/ci/job/browsertests-MultimediaViewer-en.wikipedia.beta.wmflabs.org-linux-chrome-sauce/320/console
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.wikimedia.org/pipermail/qa/attachments/20141201/9296feeb/attachment.html>