Added Jenkins slave python role, updated docker role

Change-Id: I4b900728a318dc59c4ffc4ba4c06d981f29f1758
diff --git a/jenkins/slave/python.yml b/jenkins/slave/python.yml
new file mode 100644
index 0000000..d53caf2
--- /dev/null
+++ b/jenkins/slave/python.yml
@@ -0,0 +1,10 @@
+ classes:
+   - system.jenkins.slave
+ parameters:
+   linux:
+     system:
+       package:
+         python:
+           version: latest
+         python-virtualenv:
+           version: latest