Code review comment for lp:~pjdc/glance-simplestreams-sync-charm/image-modifier-hook

Hi Tom, I'd appreciate if someone (I guess Paul, or anyone else who's familiar with these changes) took a quick look at the pull requests and gave a +1.
There were a couple of minor changes, so I'd like to get a sanity check.

Also, just one clarification question:

Are you OK with waiting for a simplestreams SRU to get filtering on trusty or do you need a version of this charm that does its own filtering?