Correct labels in yaml model parser

Summary

This is a correction for #77 (moved).

Test Environment

There is a unit test.

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src/caosadvancedtools/models/data_model.py

@@ -147,8 +147,8 @@ class DataModel(dict):
                     ref = query.execute(unique=True)
                 diff = (describe_diff(*compare_entities(ent, ref),
                                       name=ent.name,
-                                      label_old="version from the yaml file",
-                                      label_new="version from LinkAhead"))
+                                      label_e0="version from the yaml file",
+                                      label_e1="version from LinkAhead"))
 
                 if diff != "":
                     if verbose: