Update requirements.txt again for CacheControl and lockfile.

Peter Amstutz · Peter Amstutz · commit 56ddb9dc76dc · 2016-08-20T13:46:12.000-04:00
diff --git a/requirements.txt b/requirements.txt
@@ -6,3 +6,5 @@ mistune
 typing>=3.5.2 ; python_version>="2.7"
 avro ; python_version<"3"
 avro-python3 ; python_version>="3"
+CacheControl
+lockfile
