Changed assertions to use test framework assertions
Fixed SKIP_REMOTE_STORE to only mean when persisting entries
ISPN-4820 Change Size method on Cache to return the contents of the
entire cluster

* SizeCommand now uses entry iterator
ISPN-3729 Minimize the number of moved segments for SyncConsistentHashFactory

Based on the original consistent hashing paper, the
NewSyncConsistentHashFactory algorithm doesn't move any segments at all.