ISPN-4103 Generic store cache child creation fails

* Fixed issue with property not defined on loader throwing exception
ISPN-4104 Generic store cache child creation fails

* Added ConfiguredBy to the new JpaStore
ISPN-4113 Introduce a rawValues configuration property for the RestStore to tell it not to marshall/unmarshall data (in the context of Rolling Upgrades)
Tests for Rolling Upgrades via REST