Use retry on timeout flag for Redis connections

In order to avoid some fails due some high load peaks in our Redis
databases, we are going to active this flag that retries 1 more time
in case it receives a socket.Timeout error while reading or connecting

server/lib/python/cartodb_services/setup.py

@@ -10,7 +10,7 @@ from setuptools import setup, find_packages
 setup(
     name='cartodb_services',
 
-    version='0.4.2',
+    version='0.4.3',
 
     description='CartoDB Services API Python Library',