[ISPN-4645] Many XSD default values do not match the defaults from the
corresponding configuration builder

https://issues.jboss.org/browse/ISPN-4645

Updated *ConfigurationBuilder, *CacheResource, and XSD files to have the
correct default values
Modified test case code that verifies the default value for L1
configuration
ISPN-4827 Expose the cluster/cache availability over JMX attributes/DMR
metrics