Description of problem:
Users cannot register systems to katello when using 0.260 in the backend. 

Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
1. install and appropriately configure katello with pulp 0.260 as the selected version of pulp in the backend
2. attempt to register a system via system-manager: 
3.  subscription-manager register --username=admin --password=admin --org=ACME_Corporation --env=dev  --force
  
Actual results:

* This shows up in /var/log/pulp/pulp.log

2012-01-23 14:34:30,788 6868:140465619855104: pulp.server.webservices.controllers.decorators:ERROR: decorators:52 Traceback (most recent call last):
  File "/usr/lib/python2.6/site-packages/pulp/server/webservices/controllers/decorators.py", line 48, in report_error
    return method(self, *args, **kwargs)
  File "/usr/lib/python2.6/site-packages/pulp/server/webservices/controllers/decorators.py", line 127, in _auth_decorator
    value = method(self, *args, **kwargs)
  File "/usr/lib/python2.6/site-packages/pulp/server/webservices/controllers/consumers.py", line 103, in POST
    capabilities=consumer_data['capabilities'],
KeyError: 'capabilities'

* Nothing ever shows up as a registered system

Expected results:
 
* No errors thrown
* Systems can be registered.

Additional info: