tryserver recipe_module: Add get_tags.

tests/gclient_test.py

Index: tests/gclient_test.py
diff --git a/tests/gclient_test.py b/tests/gclient_test.py
index a7c31e2689e23ddaca74695b6be1c4bfdeaf3d37..65dd7327e906ab180caabe9f6b8f07ae9b3f1bfe 100755
--- a/tests/gclient_test.py
+++ b/tests/gclient_test.py
@@ -711,14 +711,14 @@ class GclientTest(trial_dir.TestCase):
     obj.RunOnDeps('None', [])
     self.assertEquals(
         [
-          'svn://example.com/foo',
           'svn://example.com/bar',
-          'svn://example.com/tar',
+          'svn://example.com/foo',
           'svn://example.com/foo/bar',
           'svn://example.com/foo/bar/baz',
           'svn://example.com/foo/bar/baz/fizz',
+          'svn://example.com/tar',
         ],
-        self._get_processed())
+        sorted(self._get_processed()))
 
   def testRecursedepsOverrideWithRelativePaths(self):
     """Verifies gclient respects |recursedeps| with relative paths."""