Second level cache not working for inherited domains (#483)

* caching properties transition from parent to chind
https://github.com/grails/grails-data-mapping/issues/1594

* caching properties transition from parent to chind
https://github.com/grails/grails-data-mapping/issues/1594

Author: purpleraven

grails-datastore-gorm-hibernate5/src/main/groovy/org/grails/orm/hibernate/cfg/GrailsDomainBinder.java

@@ -1516,7 +1516,9 @@ else if(tablePerConcreteClass) {
         if (m.getDynamicInsert()) {
             subClass.setDynamicInsert(true);
         }
-        
+
+        subClass.setCached(parent.isCached());
+
         subClass.setAbstract(sub.isAbstract());
         subClass.setEntityName(fullName);
         subClass.setJpaEntityName(unqualify(fullName));