Fix a backwards boolean comparison for nodaemon logging

We want to log to stdout if nodaemon is set.

Change-Id: I9152b8db8044bd591694c6463729985e73aa73ee
diff --git a/zuul/cmd/__init__.py b/zuul/cmd/__init__.py
index 5d8fb08..3de9ef5 100755
--- a/zuul/cmd/__init__.py
+++ b/zuul/cmd/__init__.py
@@ -88,7 +88,7 @@
         else:
             # If someone runs in the foreground and doesn't give a logging
             # config, leave the config set to emit to stdout.
-            if hasattr(self.args, 'nodaemon') and not self.args.nodaemon:
+            if hasattr(self.args, 'nodaemon') and self.args.nodaemon:
                 logging_config = logconfig.ServerLoggingConfig()
             else:
                 # Setting a server value updates the defaults to use