citest: fix remaining warnings raised by integration tests.

There was fallout in a full integration test run from my adding of
test_no_warnings_in_log which asserted that there could not be a WARNING
found in the /var/log/cloud-init.log

This fixes 2 of the cases:
 * TestCommandOutputSimple had a valid WARNING written, so adjust its
   test case to allow for that.
 * TestLxdDir had a valid config in the test but the module would
   log a WARNING, so fix the module.

Also updates lxd unit tests to look for WARN themselves.

1 files changed, 5 insertions, 1 deletions

diff --git a/tests/cloud_tests/testcases/base.py b/tests/cloud_tests/testcases/base.py
index d3586e3c..1706f59b 100644
--- a/tests/cloud_tests/testcases/base.py
+++ b/tests/cloud_tests/testcases/base.py
@@ -70,7 +70,11 @@ class CloudTestCase(unittest.TestCase):
 
     def test_no_warnings_in_log(self):
         """Warnings should not be found in the log."""
-        self.assertNotIn("WARN", self.get_data_file('cloud-init.log'))
+        self.assertEqual(
+            [],
+            [l for l in self.get_data_file('cloud-init.log').splitlines()
+             if 'WARN' in l],
+            msg="'WARN' found inside cloud-init.log")
 
 
 class PasswordListTest(CloudTestCase):