ISPN-4561 CacheManager.stop with indexing to Infinispan fails

https://issues.jboss.org/browse/ISPN-4561

As discussed, introduced a graph to store cache dependencies and enforce it at stop time, plus an API to interact with that. Query will register cache dependencies accordingly. Backporting should be straighforward.
The dependency graph keeps consistent when called by multiple threads. 
Caches stop and start don't affect the info contained the graph.