Fix regressions in Download Diffs and Perforce unit tests.
Review Request #11746 — Created July 27, 2021 and submitted
We've had some broken tests recently, one of which was a regressions
from a merge, and the other a regression from potentially OpenSSL,
stunnel, or Perforce.
The first regression in the Download Diffs view was due to an old import
TestService. We now import from the correct place.
The second had to do with Perforce and stunnel. This might be
system-dependent, but locally, all the stunnel unit tests started
failing. Upon investigation, OpenSSL was complaining about the test
certificate we use for the stunnel proxy. Potentially, it was due to a
security issue present in the old certificate (length or cipher or
something). Generating a brand-new certificate appears to solve this
Unit tests pass.