fix the iceberg test

Author: razvan

tests/templates/kuttl/iceberg/10-deploy-spark-app.yaml.j2

@@ -8,11 +8,11 @@ spec:
   vectorAggregatorConfigMapName: vector-aggregator-discovery
 {% endif %}
   sparkImage:
-{% if test_scenario['values']['spark'].find(",") > 0 %}
-    custom: "{{ test_scenario['values']['spark'].split(',')[1] }}"
-    productVersion: "{{ test_scenario['values']['spark'].split(',')[0] }}"
+{% if test_scenario['values']['spark-iceberg'].find(",") > 0 %}
+    custom: "{{ test_scenario['values']['spark-iceberg'].split(',')[1] }}"
+    productVersion: "{{ test_scenario['values']['spark-iceberg'].split(',')[0] }}"
 {% else %}
-    productVersion: "{{ test_scenario['values']['spark'] }}"
+    productVersion: "{{ test_scenario['values']['spark-iceberg'] }}"
 {% endif %}
     pullPolicy: IfNotPresent
   mode: cluster
@@ -48,7 +48,7 @@ spec:
       #
       # We extract the spark parts from the test scenario value.
       #
-      - org.apache.iceberg:iceberg-spark-runtime-{{ ".".join(test_scenario['values']['spark'].split('.')[:2]) }}_2.12:1.8.1
+      - org.apache.iceberg:iceberg-spark-runtime-{{ ".".join(test_scenario['values']['spark-iceberg'].split('.')[:2]) }}_2.12:1.8.1
   volumes:
     - name: script
       configMap:

tests/test-definition.yaml

@@ -19,6 +19,9 @@ dimensions:
     values:
       - 3.5.6
       # - 3.5.6,oci.stackable.tech/sandbox/spark-k8s:3.5.6-stackable0.0.0-dev
+  - name: spark-iceberg
+    values:
+      - 3.5.6
   - name: spark-connect
     values:
       - 3.5.6
@@ -92,7 +95,7 @@ tests:
       - openshift
   - name: iceberg
     dimensions:
-      - spark
+      - spark-iceberg
       - openshift
   - name: delta-lake
     dimensions: