Turn on redirects when retrieving a URL in the fetcher API
Review Request #3317 - Created Jan. 7, 2016 and submitted
|gmalmquist, nhoward_tw, stuhood|
Simple change to allow redirects in the requests.get() call.
Motivation: At Square, we have a proxy server that serves up tool artifacts. It works by
sending redirects with special arguments for authentication passed in to the redirect, so we require
that HTTP fetching follows redirects just as it did before https://rbcommons.com/s/twitter/r/3275
CI green at https://travis-ci.org/pantsbuild/pants/builds/101039903
Added a unit test that makes sure redirects are respected.
Tested manually in Square's repo