Cumin doesn't start with leading whitespace in cumin.conf in MRG Grid 2.2

Issue

• The MRG GUI doesn't start.
• Browser states "Unable to connect".
• /var/log/cumin/web.log shows entries like:

28805 2013-02-07 11:42:21,639 INFO Starting Cumin
28805 2013-02-07 11:42:21,640 INFO Starting CuminSession(['localhost:5672\nlog-level: debug'])
28805 2013-02-07 11:42:21,640 INFO Adding QMF broker at localhost:5672
log-level: debug with mech_list None
28805 2013-02-07 11:42:21,643 INFO Stopping Cumin
28805 2013-02-07 11:42:21,643 INFO Stopping CuminServer(0.0.0.0,45672)
28805 2013-02-07 11:42:21,643 INFO Stopping CuminSession(['localhost:5672\nlog-level: debug'])

• /var/log/cumin/web.stderr shows entries like

Traceback (most recent call last):
  File "/usr/bin/cumin-web", line 220, in main
    cumin.start()
  File "/usr/share/cumin/python/cumin/main.py", line 256, in start
    self.session.start()
  File "/usr/share/cumin/python/cumin/session.py", line 53, in start
    self.add_broker(uri)
  File "/usr/share/cumin/python/cumin/session.py", line 30, in add_broker
    qmf_broker = self.qmf_session.addBroker(uri,mechanisms=self.app.sasl_mech_list)
  File "/usr/lib64/python2.6/site-packages/qmf/console.py", line 651, in addBroker
    url = BrokerURL(target)
  File "/usr/lib64/python2.6/site-packages/qmf/console.py", line 111, in __init__
    URL.__init__(self, *args, **kwargs)
  File "/usr/lib/python2.6/site-packages/qpid/util.py", line 137, in __init__
    raise ValueError(s)
ValueError: cumin/passw0rd@localhost:5672
log-level: debug