This only allows you to run image-list, but sets up a framework
that we can use to fill in the rest of the v2 functionality.
* Related to bp glance-client-v2
Change-Id: I8827e36fdcf79fe402990a6d05898ec00cbd54c6
Rather than depend on magic, I would prefer that we explicitly call
two different request methods: json_request and raw_request. The
former will encode/decode request bodies to and from JSON, while
the latter will not.
Change-Id: I6a429a5975993f71df85df55f11c5d51c050c289