Description of problem: Starting in candlepin-0.8.13-1.el6.noarch, arch is now required to be set on either the product or the content. Previously in katello we did not set this, so now we are setting the arch to ALL on our custom products. Katello 1.3 users will need to upgrade to 1.4, and thus we will need to add this attribute to products. Candlepin does not support updating products though. At a minimum we'd just need to add an arch attribute to the product attributes list. It would be nice to be able to rename as well though. These are the attributes we use on create, would be good to be able to update them all. name multiplier attributes
You should be able to update the content today (PUT /content/{content_id}). I will add updating the prduct to the backlog.
An PUT /products/{id} call should be implemented in candlepin-0.8.17 and beyond, allowing updating of name, attributes, and other product data. I don't think this is QE testable as it's just an api call, so I'm going to close as current release. The end functionality should be covered by katello testing in the end.
This addition can be found here: https://github.com/candlepin/candlepin/pull/320