test: Use SDP support to configure Iceberg REST catalog in TrinoCatalog

tests/templates/kuttl/iceberg-hive/34_trino.yaml.j2

@@ -1,5 +1,5 @@
 ---
-apiVersion: trino.stackable.tech/v1alpha1
+apiVersion: trino.stackable.tech/v1alpha2
 kind: TrinoCatalog
 metadata:
   name: iceberg

tests/templates/kuttl/iceberg-rest/31_trino.yaml.j2

@@ -1,5 +1,5 @@
 ---
-apiVersion: trino.stackable.tech/v1alpha1
+apiVersion: trino.stackable.tech/v1alpha2
 kind: TrinoCatalog
 metadata:
   name: lakehouse
@@ -8,16 +8,27 @@ metadata:
 spec:
   connector:
     iceberg:
+      catalog:
+        rest:
+          hostname: hive-metastore-default-headless
+          port: 9001
+          tls: null
+          path: /iceberg
+          authentication:
+            oAuth2:
+              server:
+                hostname: keycloak.$NAMESPACE.svc.cluster.local
+                port: 8443
+                path: /realms/test/protocol/openid-connect/token
+                tls:
+                  verification:
+                    server:
+                      caCert:
+                        secretClass: tls
+              clientCredentials:
+                secretName: trino-client-credentials
       s3:
         reference: garage
-  configOverrides:
-    iceberg.catalog.type: rest
-    # We are using the headless service, as the hive-metastore service is missing port 9001
-    iceberg.rest-catalog.uri: http://hive-metastore-default-headless:9001/iceberg
-    iceberg.rest-catalog.security: OAUTH2
-    iceberg.rest-catalog.oauth2.server-uri: https://keycloak.$NAMESPACE.svc.cluster.local:8443/realms/test/protocol/openid-connect/token
-    # TODO Mount as env var from Secret trino-client-credentials
-    iceberg.rest-catalog.oauth2.credential: trino:trino-secret
 ---
 apiVersion: trino.stackable.tech/v1alpha1
 kind: TrinoCluster