Changed default redis_dir in order to be FHS compliant.
Changed default redis_dir in order to be FHS compliant.

albsen/ansible-redis,umn-asr/ansible-redis,DavidWittman/ansible-redis,silverlogic/ansible-redis,3choBoomer/ansible-redis,DavidWittman/ansible-redis,sourcestream/ansible-redis,holycattle/ansible-redis,mikechau/ansible-redis