Add logging_error_fixture to functional tests

The fixture will cause a formatting error when writing logs
to be raised as an exception (thus failing tests).

In the non-gabbi tests the fixture is started in the normal way
with useFixture. In the gabbi tests the fixture setUp and
cleanUp is done manually because the fixtures start and stop
per yaml file, not per test.

Change-Id: Ia5094c3a12bcb9d19d429fbe2164b4533ca9c715

placement/tests/functional/base.py

@@ -12,6 +12,7 @@
 
 from oslo_config import cfg
 from oslo_config import fixture as config_fixture
+from oslo_log.fixture import logging_error
 from oslotest import output
 import testtools
 
@@ -53,6 +54,7 @@ class TestCase(testtools.TestCase):
         self.useFixture(output.CaptureOutput())
         # Filter ignorable warnings during test runs.
         self.useFixture(capture.WarningsFixture())
+        self.useFixture(logging_error.get_logging_handle_error_fixture())
 
         self.placement_db = self.useFixture(
             fixtures.Database(database='placement'))

placement/tests/functional/fixtures/gabbits.py

@@ -16,6 +16,7 @@ import os
 from gabbi import fixture
 from oslo_config import cfg
 from oslo_config import fixture as config_fixture
+from oslo_log.fixture import logging_error
 from oslo_middleware import cors
 from oslo_policy import opts as policy_opts
 from oslo_utils.fixture import uuidsentinel as uuids
@@ -54,6 +55,9 @@ class APIFixture(fixture.GabbiFixture):
         self.standard_logging_fixture.setUp()
         self.output_stream_fixture = output.CaptureOutput()
         self.output_stream_fixture.setUp()
+        self.logging_error_fixture = (
+            logging_error.get_logging_handle_error_fixture())
+        self.logging_error_fixture.setUp()
         # Filter ignorable warnings during test runs.
         self.warnings_fixture = capture.WarningsFixture()
         self.warnings_fixture.setUp()
@@ -117,6 +121,7 @@ class APIFixture(fixture.GabbiFixture):
         self.warnings_fixture.cleanUp()
         self.output_stream_fixture.cleanUp()
         self.standard_logging_fixture.cleanUp()
+        self.logging_error_fixture.cleanUp()
         self.conf_fixture.cleanUp()
 
     @staticmethod