Allow EndServiceStackRequest() behavior to be overridden

Author: mythz

src/ServiceStack.Mvc/ServiceStackController.cs

@@ -253,6 +253,11 @@ protected override void Dispose(bool disposing)
                 serviceStackProvider = null;
             }
 
+            EndServiceStackRequest();
+        }
+
+        public virtual void EndServiceStackRequest()
+        {
             HostContext.AppHost.OnEndRequest(ServiceStackRequest);
         }
     }

src/ServiceStack/AspNet/ServiceStackPage.cs

@@ -170,6 +170,11 @@ public override void Dispose()
                 serviceStackProvider = null;
             }
 
+            EndServiceStackRequest();
+        }
+
+        public virtual void EndServiceStackRequest()
+        {
             HostContext.AppHost.OnEndRequest(ServiceStackRequest);
         }
     }