[WFLY-2418] Fix directory name typo
[WFLY-2185] Only create one childfirst classloader per old version in core-model transformers tests to a) optimize b) avoid PermGen issues

Previously a child first class loader was created for every single test method/old version combination, causing occasional PermGen problems with tests containing many test methods
[WFLY-2214] Adding support for custom properties to be defined for outbound LDAP connections.
[WFLY-2408] TRACE logging for properties used to connect to LDAP.
[WFLY-2214] Removal of a <> that crept in for the Hashtable instance.
[WFLY-2214] Also add properties to configuration used to test the model.
WFLY-2415 Add configuration option to enable/disable Infinispan statistics.
Cosmetic renaming
Convert InfinispanSubsystemXMLWriter to leverage AttributeDefinitions for marshalling.
Code cleanup.