Add license parameter to setup.py

In order to have bdist_rpm output serviceable,
add the license field.  This results in an rpm
that has all the fields desired.

Change-Id: I18f75f89385ac5022050372925c19f46206244f9

setup.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python
 # Copyright (c) 2013 Hewlett-Packard Development Company, L.P.
+# Copyright (c) 2015 Lenovo
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -18,6 +19,7 @@
 import setuptools
 
 setuptools.setup(
+    license='Apache License, Version 2.0',
     scripts=['bin/pyghmicons', 'bin/pyghmiutil', 'bin/virshbmc'],
     setup_requires=['pbr'],
     pbr=True)