Fix references to CacheManagerFactory in the readme and javadoc fo the TCK

There are a few places where CacheManagerFactory is still mentioned in the javadoc, and a couple of places in the ReadMe where the names of old tests are mentioned. 

The commits in this pull request update the javadoc and readme of the TCK to use Caching instead of CacheManagerFactory and CachingProvider instead of CacheManagerFactoryProvider.