Reduce extraneous test output

The tests generate a large amount of extraneous logging output.
This due to the manage utility, when tested via test_manage,
setting up logging in it's own way. Monkey patching the log.setup
call to a no-op during tests prevents this.

Also fixed an incorrect usage of assert which was causing a
warning to be generated.

Change-Id: I6b8724142c0812d84e697e280acc0264620f6a2b

glance/tests/stubs.py

@@ -132,10 +132,9 @@ def stub_out_registry_and_store_server(stubs, base_dir, **kwargs):
 
         def endheaders(self):
             hl = [i.lower() for i in self.req.headers.keys()]
-            assert(not ('content-length' in hl and
-                        'transfer-encoding' in hl),
-                   'Content-Length and Transfer-Encoding '
-                   'are mutually exclusive')
+            assert not ('content-length' in hl and
+                        'transfer-encoding' in hl), \
+                'Content-Length and Transfer-Encoding are mutually exclusive'
 
         def send(self, data):
             # send() is called during chunked-transfer encoding, and

glance/tests/unit/test_manage.py

@@ -32,6 +32,7 @@ class TestManageBase(testtools.TestCase):
         def clear_conf():
             manage.CONF.reset()
             manage.CONF.unregister_opt(manage.command_opt)
+        clear_conf()
         self.addCleanup(clear_conf)
 
         self.patcher = mock.patch('glance.db.sqlalchemy.api.get_engine')
@@ -40,6 +41,12 @@ class TestManageBase(testtools.TestCase):
 
     def _main_test_helper(self, argv, func_name=None, *exp_args, **exp_kwargs):
         self.useFixture(fixtures.MonkeyPatch('sys.argv', argv))
+
+        def setup(product_name, version='unknown'):
+            pass
+
+        self.useFixture(fixtures.MonkeyPatch(
+            'glance.openstack.common.log.setup', setup))
         manage.main()
         func_name.assert_called_once_with(*exp_args, **exp_kwargs)