Multi-Tenant node interceptor

- Actually less happening here than it would first appear
 - Some MT bean and interface consolidation
 - The unit test has no meat to it, yet... coming soon!


git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@10781 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/repo/tenant/TenantUserService.java

@@ -0,0 +1,19 @@
+package org.alfresco.repo.tenant;
+
+/**
+ * Interface for Tenant User-Domain functionality.
+ * 
+ * @author Jan Vonka
+ * @author Derek Hulley
+ * @since 3.0
+ */
+public interface TenantUserService
+{
+    public String getCurrentUserDomain();
+    
+    public String getDomainUser(String baseUsername, String tenantDomain);
+    
+    public String getDomain(String name);
+ 
+    public boolean isEnabled();
+}