Comment 8 for bug 1460492

Note that when you say openstack ec2 that's a seperate but related interface that is actually provided by the ec2 middleware in keystone[1]. Ideally if we could teach OSC about the different types of credential we could use the credentials interface directly and get rid of that middlewarw.

[1] https://github.com/openstack/keystone/tree/master/keystone/contrib/ec2