Added an indices level field data cache listener that always gets invoked and updates indices statistics and services about field data loading and unloading.

Moved the circuit breaker memory reducing logic to the IndicesFieldDataCacheListener, so it always reduces the memory used when field data gets unloaded,
this fixes a issue where the circuit breaker didn't get reduced when segments where no shardId could be resolved get cleared up.

Also made sure that exceptions in the percolator service are bubbled up properly.

Closes #5588
Removed incorrect comment