core: move module handling out of dispatcher

Split module handling code from the dispatcher.
The new class for managing Modules is called SecNode.

* change logging to no longer need a reference to modobj
* modules get a reference to the secnode obj instead of the
  dispatcher
* intermediate usage fixes for frappy_psi/sea

Change-Id: Ifee4bb47aa7a4508bb4a47c9a5873b7e2d5faf67
Reviewed-on: https://forge.frm2.tum.de/review/c/secop/frappy/+/32249
Reviewed-by: Alexander Zaft <a.zaft@fz-juelich.de>
Tested-by: Jenkins Automated Tests <pedersen+jenkins@frm2.tum.de>

test/test_logging.py

@@ -29,11 +29,24 @@ import frappy.logging
 from frappy.logging import logger, generalConfig, HasComlog
 
 
+class SecNodeStub:
+    def __init__(self):
+        self.modules = {}
+        self.name = ""
+
+    def add_module(self, module, modname):
+        self.modules[modname] = module
+
+    def get_module(self, modname):
+        return self.modules[modname]
+
+
 class ServerStub:
     restart = None
     shutdown = None
 
     def __init__(self):
+        self.secnode = SecNodeStub()
         self.dispatcher = Dispatcher('', logger.log.getChild('dispatcher'), {}, self)
 
 
@@ -98,7 +111,7 @@ def init_(monkeypatch):
                 def __init__(self, name, srv, **kwds):
                     kwds['description'] = ''
                     super().__init__(name or 'mod', logger.log.getChild(name), kwds, srv)
-                    srv.dispatcher.register_module(self, name, name)
+                    srv.secnode.add_module(self, name)
                     self.result[:] = []
 
                 def earlyInit(self):