Description of problem:
If a user activates a registration token then subscribes to one of the pools corresponding to this token, the corresponding entitlement certificate will not contain a contract number.  It'll look something like this:

[root@oldceremony product]# subscription-manager-cli list --consumed
+-------------------------------------------+
    Consumed Product Subscriptions
+-------------------------------------------+


Name:               	Red Hat Enterprise Linux Advanced Platform, Standard (Unlimited Sockets)
SerialNumber:       	176                      
OrderNumber:       	Null                     
Active:             	True                     
Begins:             	Fri May 28 00:00:00 2010 
Expires:            	Fri May 27 00:00:00 2011 

Version-Release number of selected component (if applicable):
subscription-manager HEAD, morning of 5/28 git pull
FTE Candlepin environment, 5/28

How reproducible:
Always

Steps to Reproduce:
1. Hock a subscription number
2. Subscribe to an entitlement pool corresponding to this subscription number
3. Run a subscription-manager-cli list --consumed
  
Actual results:
As above

Expected results:
Contract number included

Additional info: