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
Copied mostly from python-keystoneclient with
some Glance-specific stuff. README.rst shows what
WILL be the way to do things, not what is currently coded :)