Using an OrderedDict with tutorial example

Oops, our tutorial example should be using an OrderedDict rather than dict so we can be assured that the end result will match the expected string. Spotted by Foxboron... https://trac.torproject.org/projects/tor/ticket/14016#comment:2

Using an OrderedDict with tutorial example
d47b39fe · Damian Johnson · a4089b9b · d47b39fe
Commit d47b39fe authored 10 years ago by Damian Johnson
--- a/test/unit/tutorial_examples.py
+++ b/test/unit/tutorial_examples.py
@@ -2,6 +2,7 @@
 Tests for the examples given in stem's tutorial.
 """

+import collections
 import itertools
 import StringIO
 import unittest
@@ -279,7 +280,7 @@ class TestTutorialExamples(unittest.TestCase):
      # Query all authority votes asynchronously.

      downloader = remote.DescriptorDownloader(document_handler = DocumentHandler.DOCUMENT)
-      queries = {}
+      queries = collections.OrderedDict()  # needed so output's order matches what's expected

      for name, authority in remote.get_authorities().items():
        if authority.v3ident is None: