Add provider Memcached
Change redis interface and tests
add memcached provider and small change cacheInterface
cange box url to http not local file
add files
delete file
Change code by codeReview corrents
change delete in RedisCache
corrent comments
change gaps puppet file
change gap formet
change mdelete on redis
change var names
Merge pull request #1 from LinguaLeo/feature/sd-523-create-memcached

Feature/sd 523 create memcached