Using the BaseTestCase across the tests in the tree lets us put in log
fixtures and consistently handle mox and stubout.
Part of blueprint grizzly-testtools.
Change-Id: Iba7eb2c63b0c514009b2c28e5930b27726a147b0
On the path to testr migration, we need to replace the unittest base classes
with testtools.
Replace tearDown with addCleanup, addCleanup is more resilient than tearDown.
The fixtures library has excellent support for managing and cleaning
tempfiles. Use it.
Replace skip_ with testtools.skipTest
Part of blueprint grizzly-testtools.
Change-Id: I45e11bbb1ff9b31f3278d3b016737dcb7850cd98