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Hey guys!

We've gotten nova ported to testtools and fixtures (it's not all 100%
pretty, but we've got it in there strongly)

This means that it's important that if you make any new test classes and
you don't subclass nova.test.TestCase, that you should subclass
testtools.TestCase and not unittest.TestCase (elsewise some things, like
log collection, be unhappy)

Thanks!
Monty