Reverted "Reduced time.sleep() in cache touch() tests."
Reverted "Reduced time.sleep() in cache touch() tests."

This reverts commit 177a49e79c882603da64d45995f5fd60dce8c852
which caused more frequent failures of test_touch().
auvipy/django,django/django,solarissmoke/django,felixxm/django,solarissmoke/django,dsanders11/django,atul-bhouraskar/django,dsanders11/django,apollo13/django,elena/django,ghickman/django,freakboy3742/django,koordinates/django,blighj/django,adamchainz/django,wkschwartz/django,elena/django,manhhomienbienthuy/django,django/django,adamchainz/django,wkschwartz/django,atul-bhouraskar/django,monetate/django,manhhomienbienthuy/django,monetate/django,elena/django,manhhomienbienthuy/django,dsanders11/django,MarkusH/django,shaib/django,auvipy/django,pauloxnet/django,blighj/django,rsalmaso/django,dsanders11/django,elena/django,django/django,blighj/django,monetate/django,adamchainz/django,MarkusH/django,atul-bhouraskar/django,rsalmaso/django,MarkusH/django,manhhomienbienthuy/django,shaib/django,pauloxnet/django,ghickman/django,apollo13/django,koordinates/django,monetate/django,wkschwartz/django,freakboy3742/django,shaib/django,koordinates/django,ghickman/django,atul-bhouraskar/django,pauloxnet/django,takis/django,rsalmaso/django,blighj/django,apollo13/django,felixxm/django,auvipy/django,takis/django,koordinates/django,felixxm/django,ghickman/django,felixxm/django,apollo13/django,wkschwartz/django,solarissmoke/django,adamchainz/django,freakboy3742/django,django/django,shaib/django,solarissmoke/django,takis/django,auvipy/django,rsalmaso/django,takis/django,pauloxnet/django,MarkusH/django