'Setup a test case environment.
Creates a ``ScaleIODriver`` instance
Mocks the ``requests.get/post`` methods to return
``MockHTTPSResponse``\'s instead.'

def setUp(self):

    super(TestScaleIODriver, self).setUp()
    self.configuration = conf.Configuration(driver.scaleio_opts, conf.SHARED_CONF_GROUP)
    self._set_overrides()
    self.driver = mocks.ScaleIODriver(configuration=self.configuration)
    self.mock_object(requests, 'get', self.do_request)
    self.mock_object(requests, 'post', self.do_request)
