added EvalMetric to template

src/main/java/de/monticore/lang/monticar/cnntrain/generator/CNNTrainTemplateController.java

@@ -111,6 +111,13 @@ public class CNNTrainTemplateController {
         return getConfiguration().getEntry("context").getValue().toString();
     }
 
+    public String getEvalMetric() {
+        if (!getConfiguration().getEntryMap().containsKey("eval_metric")) {
+            return null;
+        }
+        return getConfiguration().getEntry("eval_metric").getValue().toString();
+    }
+
     public String getOptimizerName() {
         if (getConfiguration().getOptimizer() == null) {
             return null;

src/main/resources/templates/Config.ftl

@@ -13,6 +13,9 @@ context = '${tc.context}',
 <#if (tc.normalize)??>
 normalize = ${tc.normalize?string("True","False")},
 </#if>
+<#if (tc.evalMetric)??>
+eval_metric = '${tc.evalMetric}',
+</#if>
 <#if (tc.configuration.optimizer)??>
 optimizer = '${tc.optimizerName}',
 optimizer_params = {