avoid use of BootstrapServiceRegistryBuilder in MockSessionFactory

so we don't need to go locating and instantiating unnecessary services

Author: gavinking

tooling/metamodel-generator/src/main/java/org/hibernate/processor/validation/MockSessionFactory.java

@@ -23,10 +23,11 @@
 import org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl;
 import org.hibernate.boot.model.relational.Database;
 import org.hibernate.boot.model.relational.SqlStringGenerationContext;
-import org.hibernate.boot.registry.BootstrapServiceRegistryBuilder;
 import org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl;
 import org.hibernate.boot.registry.classloading.spi.ClassLoadingException;
+import org.hibernate.boot.registry.internal.BootstrapServiceRegistryImpl;
 import org.hibernate.boot.registry.internal.StandardServiceRegistryImpl;
+import org.hibernate.boot.registry.selector.internal.StrategySelectorImpl;
 import org.hibernate.boot.spi.BootstrapContext;
 import org.hibernate.boot.spi.MappingDefaults;
 import org.hibernate.boot.spi.MetadataBuildingContext;