C#/Java: Rename the modelgenerator and converter predicate names.

Author: michaelnebel

misc/scripts/models-as-data/helpers.py

@@ -4,10 +4,10 @@
 import subprocess
 
 # Shared strings.
-summaryModelPredicate = "extSummaryModel"
-sinkModelPredicate = "extSinkModel"
-sourceModelPredicate = "extSourceModel"
-neutralModelPredicate = "extNeutralModel"
+summaryModelPredicate = "summaryModel"
+sinkModelPredicate = "sinkModel"
+sourceModelPredicate = "sourceModel"
+neutralModelPredicate = "neutralModel"
 addsToTemplate = """  - addsTo:
       pack: {0}
       extensible: {1}