* Use a recursive generator function to iterate over the image
container. The presence of next links are indicators to
continue pagination while their value drives the location of
the next page.
* A user can pass in --page-size on the command line, or page_size
when using the controller directly, to control how many images
are requested with each subsequent paginated request. Default page
size is 20.
* Add a flag (strict_url_check) for the FakeAPI class to control
whether it chops off query params when trying to match a request
to a fixture.
* Related to bp glance-client-v2.
Change-Id: Ib98e912a7af0bb570b4fd738733edd9b837d1a12