ISPN-4153 Server can't start a cache with custom cache store

* Added way for configuration to figure out custom class
ISPN-4168 Server/Integration/TestSuite ignores tests failure for build

* Removed test failures from being ignored
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ISPN-4157 Update JPA store to 7.x XML parser
ISPN-4158 Remove 6.0 XML parsers and related attribute/elements