Add basic image filtering tests

* Add service method: detailed listing
* Add test case: filtering by name
* Add test case: filtering by size (min, max)
* Add test case: filter by disk format
* Add test case: filter by container_type
* Add test case: Ordering by size

Partially fixes bug #1086590.

Change-Id: Ia4d12a9d77ecf5cfd8552747b563c4d9da83c6b6
Merge "Add basic image filtering tests"