[1.5.x] Fixed feedgenerator tests under hash randomization
[1.5.x] Fixed feedgenerator tests under hash randomization

Backport of 46d27a6 from master.

bliti/django-nonrel-1.5,bliti/django-nonrel-1.5,hasadna/django,imtapps/django-imt-fork,hasadna/django,alx-eu/django,bliti/django-nonrel-1.5,imtapps/django-imt-fork,alx-eu/django,ccn-2m/django,alx-eu/django,ccn-2m/django,alx-eu/django,ccn-2m/django,imtapps/django-imt-fork,hasadna/django,ccn-2m/django