Move to the latest docker client over docker-py python client.
If you are running an old docker-engine, just update with:
sudo service docker stop && sudo apt-get -y install docker-engine
And you should be good to go.
If you don't run the prerequisites, this change should be backward compatible with older docker clients installations.

Change-Id: Ieaa08586df1b29fc5b0fc72710736b17ae9a5f65
diff --git a/src/test/setup/requirements.txt b/src/test/setup/requirements.txt
index 94a195c..57cdaed 100644
--- a/src/test/setup/requirements.txt
+++ b/src/test/setup/requirements.txt
@@ -2,7 +2,7 @@
 scapy==2.3.2
 monotonic
 configObj
-docker-py
+docker
 nsenter
 pyroute2
 netaddr