Added basic cognitoidentity (not working)

moto/cognitoidentity/urls.py

@@ -0,0 +1,10 @@
+from __future__ import unicode_literals
+from .responses import DataPipelineResponse
+
+url_bases = [
+    "https?://datapipeline.(.+).amazonaws.com",
+]
+
+url_paths = {
+    '{0}/$': DataPipelineResponse.dispatch,
+}