Add feature overrides to DVCS webapi tests
Review Request #10163 — Created Sept. 22, 2018 and submitted
I had been running all the unit tests for DVCS-related changes with the
settings_local.py. This had the side effect of enabling the feature
for unit tests that required the feature to be enabled, but as soon as
the feature was disabled those unit tests would fail. Those unit tests
now have proper feature overrides when they are making API calls.
Ran the unit tests with the DVCS feature disabled.