Refs CVE-2020-13254 -- Fixed cache.tests when KEY_PREFIX is defined.
Refs CVE-2020-13254 -- Fixed cache.tests when KEY_PREFIX is defined.

Follow up to 2c82414914ae6476be5a166be9ff49c24d0d9069.

solarissmoke/django,googleinterns/django,MarkusH/django,felixxm/django,django/django,monetate/django,pauloxnet/django,adamchainz/django,auvipy/django,MarkusH/django,wkschwartz/django,koordinates/django,solarissmoke/django,apollo13/django,dsanders11/django,ghickman/django,pauloxnet/django,freakboy3742/django,apollo13/django,atul-bhouraskar/django,wkschwartz/django,rsalmaso/django,monetate/django,shaib/django,googleinterns/django,dsanders11/django,pauloxnet/django,takis/django,elena/django,adamchainz/django,manhhomienbienthuy/django,koordinates/django,atul-bhouraskar/django,blighj/django,manhhomienbienthuy/django,wkschwartz/django,blighj/django,rsalmaso/django,auvipy/django,atul-bhouraskar/django,googleinterns/django,koordinates/django,elena/django,shaib/django,solarissmoke/django,apollo13/django,freakboy3742/django,atul-bhouraskar/django,pauloxnet/django,rsalmaso/django,elena/django,takis/django,monetate/django,googleinterns/django,takis/django,dsanders11/django,rsalmaso/django,adamchainz/django,elena/django,solarissmoke/django,freakboy3742/django,takis/django,shaib/django,manhhomienbienthuy/django,monetate/django,auvipy/django,django/django,adamchainz/django,felixxm/django,django/django,wkschwartz/django,manhhomienbienthuy/django,apollo13/django,django/django,blighj/django,ghickman/django,auvipy/django,koordinates/django,felixxm/django,MarkusH/django,shaib/django,ghickman/django,dsanders11/django,ghickman/django,MarkusH/django,blighj/django,felixxm/django