- Merged with KevinVdV/DSpace/DS-4239-migrate-workflow-xml-to-spring

- Changed all implementations of XmlWorkflowFactoryImpl to work with new mapping
- Moved their java doc to XmlWorkflowFactory
- Removed/Changed exceptions
- Altered tests in WorkflowDefinitionRestRepositoryIT to work with changes

Merge remote-tracking branch 'github-kevin/DS-4239-migrate-workflow-xml-to-spring' into workflow-step-definitions

# Conflicts:
#	dspace-api/src/main/java/org/dspace/xmlworkflow/XmlWorkflowFactoryImpl.java
#	dspace-api/src/main/java/org/dspace/xmlworkflow/factory/XmlWorkflowFactory.java

dspace-api/src/main/java/org/dspace/content/CollectionServiceImpl.java

@@ -48,6 +48,7 @@ import org.dspace.harvest.HarvestedCollection;
 import org.dspace.harvest.service.HarvestedCollectionService;
 import org.dspace.workflow.factory.WorkflowServiceFactory;
 import org.dspace.xmlworkflow.WorkflowConfigurationException;
+import org.dspace.xmlworkflow.XmlWorkflowFactoryImpl;
 import org.dspace.xmlworkflow.factory.XmlWorkflowFactory;
 import org.dspace.xmlworkflow.state.Workflow;
 import org.dspace.xmlworkflow.storedcomponents.CollectionRole;
@@ -383,7 +384,7 @@ public class CollectionServiceImpl extends DSpaceObjectServiceImpl<Collection> i
             log.error(LogManager.getHeader(context, "setWorkflowGroup",
                     "collection_id=" + collection.getID() + " " + e.getMessage()), e);
         }
-        if (!StringUtils.equals(XmlWorkflowFactory.LEGACY_WORKFLOW_NAME, workflow.getID())) {
+        if (!StringUtils.equals(XmlWorkflowFactoryImpl.LEGACY_WORKFLOW_NAME, workflow.getID())) {
             throw new IllegalArgumentException(
                     "setWorkflowGroup can be used only on collection with the default basic dspace workflow. "
                     + "Instead, the collection: "