Introduce setup files that copy roles to relevant directories

This enables easy installation of these roles through pip.

setup.py

@@ -0,0 +1,13 @@
+import setuptools
+
+# In python < 2.7.4, a lazy loading of package `pbr` will break
+# setuptools if some other modules registered functions in `atexit`.
+# solution from: http://bugs.python.org/issue15881#msg170215
+try:
+    import multiprocessing  # noqa
+except ImportError:
+    pass
+
+setuptools.setup(
+    setup_requires=['pbr>=2.0.0'],
+    pbr=True)