software/fluentd/test: adjust test for msgpack >= 1.0

As described in https://github.com/msgpack/msgpack-python#major-breaking-changes-in-msgpack-10
raw is False by default for unpacker so we receive strings, not bytes

software/fluentd/test/test.py

@@ -92,8 +92,8 @@ class WendelinTutorialTestCase(FluentdTestCase):
 
   @classmethod
   def measureDict(cls):
-    return {k: v.encode() for k, v in
-      zip((b'pressure', b'humidity', b'temperature'), cls._measurementList)}
+    return {k: v for k, v in
+      zip(('pressure', 'humidity', 'temperature'), cls._measurementList)}
 
   @classmethod
   def setUpClass(cls):