Add python-rocket recipe

Rocket is an minimal wsgi http server.
diff --git a/common/recipes-devtools/python/python-rocket/setup.patch b/common/recipes-devtools/python/python-rocket/setup.patch
new file mode 100644
index 0000000..7affb2f
--- /dev/null
+++ b/common/recipes-devtools/python/python-rocket/setup.patch
@@ -0,0 +1,13 @@
+Index: Rocket-1.2.4/setup.py
+===================================================================
+--- Rocket-1.2.4.orig/setup.py
++++ Rocket-1.2.4/setup.py
+@@ -4,8 +4,6 @@
+ # This file is part of the Rocket Web Server
+ # Copyright (c) 2009 Timothy Farrell
+ 
+-from distribute_setup import use_setuptools
+-use_setuptools()
+ from setuptools import setup, find_packages
+ 
+ import os