TimerService: fix import of bundled timerserver

Without this commit, it felt back to the timerserver egg.

product/TimerService/timerserver/__init__.py

@@ -6,5 +6,5 @@ class TimerServerFactory(ServerFactory):
         self.interval = section.interval
 
     def create(self):
-        from timerserver.TimerServer import TimerServer
+        from .TimerServer import TimerServer
         return TimerServer(self.module, self.interval)

product/TimerService/timerserver/component.xml

@@ -2,7 +2,7 @@
   <import package="ZServer" />
   
   <sectiontype name="timer-server"
-               datatype="timerserver.TimerServerFactory"
+               datatype="Products.TimerService.timerserver.TimerServerFactory"
                implements="ZServer.server">
     <key name="interval" datatype="float" default="600">
       <description>