use_stderr should be False for tox tests

Reverting the change to the trove.test.conf so that the tox tests are
not so verbose with all the logging when running through the tests. It
makes it very difficult to find out what failed and where without much
groking of the output.

This was a change i made so that when you do a './redstack start-fake'
it would show the logs in the screen session. But this turned out to be
a bad idea when running in tox.

Change-Id: I236b2de2e89e49fd937d917d2955fddb5fb35d6f
Merge "use_stderr should be False for tox tests"