ISPN-5011 CacheManager not stopping when search factory not initialized
[ISPN-4645] Many XSD default values do not match the defaults from the
corresponding configuration builder

Updated core XSD for state transfer chunk size property default value
Implement purgeOnJoin

The joiner will still do the preload, but the entries will be removed from
the data container.

Also includes a fix for ISPN-3217 (entries not written to the cache store
on a backup owner with CACHE_MODE_LOCAL).

A hack was needed to avoid triggering ISPN-3443 (state transfer undoing the
remove operations).