Entry Iterator partition support

ISPN-4890 Entry iterator should throw AvailabilityException in degraded mode

* Check availability before allowing iteration
* Listen for availability changes while processing iteration

ISPN-4904 PartitionHandlingInterceptor should not do checks when Flag.CACHE_MODE_LOCAL is supplied

* Skip partition checks when local flag is provided

https://issues.jboss.org/browse/ISPN-4890
https://issues.jboss.org/browse/ISPN-4904