CC-668

###Description of your patch###

Recipe to add Magento with Redis support to ey-cloud-recipes


###Estimated risk###

Low

###Components involved###

magento_redis recipe 

###Description of testing done###

booted configuration with magento and redis to get local.xml working

###QA Instructions###

Boot redis util and add custom chef recipe. You should see local.xml being updated with the db host information and redis information.