Hotfix the cascade

Signed-off-by: Martin Weise <martin.weise@tuwien.ac.at>

helm/dbrepo/templates/metadata-configmap.yaml

@@ -389,7 +389,7 @@ data:
         auto_generated   BOOLEAN                  DEFAULT false,
         is_null_allowed  BOOLEAN         NOT NULL DEFAULT true,
         PRIMARY KEY (id),
-        FOREIGN KEY (view_id) REFERENCES mdb_view (id)
+        FOREIGN KEY (view_id) REFERENCES mdb_view (id) ON DELETE CASCADE
     ) WITH SYSTEM VERSIONING;
 
     CREATE TABLE IF NOT EXISTS `mdb_identifiers`