Object Storage Proxy fails to start

I'm trying Object Storage installation as reported here: http://docs.openstack.org/trunk/openstack-compute/install/content/ch_installing-openstack-object-storage.html.

When I try to start the proxy as reported here http://docs.openstack.org/trunk/openstack-compute/install/content/installing-and-configuring-the-proxy-node.html (bullet 12), I get the following traceback:

root@nova-controller:/etc/swift# swift-init proxy start
Starting proxy-server...(/etc/swift/proxy-server.conf)
Traceback (most recent call last):
  File "/usr/bin/swift-proxy-server", line 22, in <module>
    run_wsgi(conf_file, 'proxy-server', default_port=8080, **options)
  File "/usr/lib/python2.7/dist-packages/swift/common/wsgi.py", line 122, in run_wsgi
    loadapp('config:%s' % conf_file, global_conf={'log_name': log_name})
  File "/usr/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 247, in loadapp
    return loadobj(APP, uri, name=name, **kw)
  File "/usr/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 272, in loadobj
    return context.create()
  File "/usr/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 710, in create
    return self.object_type.invoke(self)
  File "/usr/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 207, in invoke
    app = filter(app)
  File "/usr/lib/python2.7/dist-packages/keystone/middleware/auth_token.py", line 524, in auth_filter
    return AuthProtocol(app, conf)
  File "/usr/lib/python2.7/dist-packages/keystone/middleware/auth_token.py", line 123, in __init__
    self.delay_auth_decision = int(conf.get('delay_auth_decision', 0))
ValueError: invalid literal for int() with base 10: 'true'

After some investigation, I found a related bug here https://bugs.launchpad.net/keystone/+bug/995219

As described in the bug report, I modified /etc/proxy-server.conf changing "delay_auth_decision = true" into "delay_auth_decision = 10".

I restarted the proxy, and it works.

I suggest modifying the document accordingly (both here http://docs.openstack.org/trunk/openstack-compute/install/content/installing-and-configuring-the-proxy-node.html and here http://docs.openstack.org/trunk/openstack-compute/install/content/swift-proxy-conf.html)