Fixing data processing image registry

The Data Processing Image Registry was not adapted to use
expect the "previous" return value from glance.image_list_detailed.
This change allows the Image Registry to work correctly again.

Change-Id: I990962483197f54ee9436278463c4709b909297a
Closes-Bug:  #1347036
Imported Translations from Transifex

Change-Id: I0c57cf6a920d33ad40c712cb13fbb1890702d58d
Merge "Fixing data processing image registry"