scale setup tweaks

neutron:
1) To allow long URI
root@b5s29:/usr/lib/python2.7/dist-packages# git diff
diff --git a/neutron/wsgi.py b/neutron/wsgi.py
index bd4b5e6..bf084a0 100644
--- a/neutron/wsgi.py
+++ b/neutron/wsgi.py
@@ -262,7 +262,8 @@ class Server(object):
                              max_size=self.num_threads,
                              log=loggers.WritableLogger(LOG),
                              keepalive=CONF.wsgi_keep_alive,
-                             socket_timeout=self.client_socket_timeout)
+                             socket_timeout=self.client_socket_timeout,
+                             url_length_limit=81920)
 
 
 class Middleware(object):