core: fix Dispatcher and SECNode opts handling

both tried to consume everything before, also making the check for
unknown options afterwards pointless

Change-Id: I7e44c088163e0b99ac509a2c0f757270807d97ab
Fixes: #4912
Reviewed-on: https://forge.frm2.tum.de/review/c/secop/frappy/+/34837
Tested-by: Jenkins Automated Tests <pedersen+jenkins@frm2.tum.de>
Reviewed-by: Georg Brandl <g.brandl@fz-juelich.de>

frappy/secnode.py

@@ -40,8 +40,6 @@ class SecNode:
     def __init__(self, name, logger, options, srv):
         self.equipment_id = options.pop('equipment_id', name)
         self.nodeprops = {}
-        for k in list(options):
-            self.nodeprops[k] = options.pop(k)
         # map ALL modulename -> moduleobj
         self.modules = {}
         # list of EXPORTED modules