LPS-49445 Remove sample MemoryCacheManger, it does not work any more, some features depend on ehcache now, will add it back after decouple is finished.
LPS-49445 Make sure each MemoryPortalCacheManager has unique name.
LPS-49445 Make PortalCacheManager cluster aware, it determines if a PortalCacheManager can do cluster operaations like bootstrap and replication.