Use NOS-Brick

Use NOS-Brick project to setup OS-Brick for our Non-OpenStack use case.

This way we no longer have to care about how to setup privsep, how to
workaround the RBD connector, etc.

setup.py

@@ -17,6 +17,7 @@ with open('HISTORY.rst') as history_file:
 
 requirements = [
     'cinder>=11.0<12.0',
+    'nos-brick',
 ]
 
 test_requirements = [