make entangle mapping a dict

Change-Id: I38d863a907469674001f0721140f88c17b53635b
Reviewed-on: https://forge.frm2.tum.de/review/c/secop/frappy/+/30911
Tested-by: Jenkins Automated Tests <pedersen+jenkins@frm2.tum.de>
Reviewed-by: Enrico Faulhaber <enrico.faulhaber@frm2.tum.de>
Reviewed-by: Alexander Zaft <a.zaft@fz-juelich.de>

cfg/test_cfg.py

@@ -44,3 +44,10 @@ Mod('Lower',
     'frappy_demo.test.Lower',
     'something else',
 )
+
+Mod('Decision',
+    'frappy_demo.test.Mapped',
+    'Random value from configured property choices. Config accepts anything ' \
+    'that can be converted to a list',
+    choices = ['Yes', 'Maybe', 'No'],
+)