modify arguments of Dispatcher.announce_update

- 'pname' argument is not needed
- change 'modulename' argument to 'moduleobj'
  (needed for further change)

Change-Id: Ib21f8ad06d9b2be4005ff3513088a85e29785c94
Reviewed-on: https://forge.frm2.tum.de/review/c/secop/frappy/+/32744
Tested-by: Jenkins Automated Tests <pedersen+jenkins@frm2.tum.de>
Reviewed-by: Enrico Faulhaber <enrico.faulhaber@frm2.tum.de>
Reviewed-by: Markus Zolliker <markus.zolliker@psi.ch>

frappy/secnode.py

@@ -94,6 +94,7 @@ class SecNode:
         if modulename in list(self.modules.values()):
             # it's actually already the module object
             return modulename
+
         # create module from srv.module_cfg, store and return
         self.log.debug('attempting to create module %r', modulename)