Description of problem:

I have an automated EventTests that was authored long ago for the benefit of pre candlepin 2.0 testing to assert a "POOL MODIFIED" event.  The same tests continue to be executed against candlepin-2.0.  Recently one of the PUT calls started failing.  Testing candlepin-2.0 with the TESTDATA deployed, I am hitting this error when attempting to change the startDate of subscription 80....

[root@jsefler-6 ~]# curl --stderr /dev/null --insecure --user admin:admin --request PUT --data '{"owner":{"key":"admin"},"product":{"id":"awesomeos-guestlimit-4-stackable"},"id":"80","startDate":"Sat, 19 Dec 2015 19:00:00 -0500"}' --header 'accept: application/json' --header 'content-type: application/json' https://jsefler-f22-candlepin.usersys.redhat.com:8443/candlepin/owners/subscriptions | python -m json.tool
{
    "displayMessage": "Unable to find a pool with the ID \"null\".", 
    "requestUuid": "730a8259-261a-4d3e-9069-c4da7812a1d0"
}



Version:
[root@jsefler-f22-candlepin candlepin]# git log | head -1
commit 6d28f47fdbf1d6f7bd9b60ebb0bfc7842cf6f4e7  <===========
[root@jsefler-6 ~]# subscription-manager version
server type: Red Hat Subscription Management
subscription management server: 2.0.10-1  <===========
subscription management rules: 5.19
subscription-manager: 1.16.8-1.el6
python-rhsm: 1.16.6-1.el6