Add allowed-packages to scaffold task (#296)

Author: dnestoro

tests/tck-build-logic/src/main/java/org/graalvm/internal/tck/ScaffoldTask.java

@@ -135,7 +135,7 @@ private void addToMetadataIndexJson(Coordinates coordinates) throws IOException
 
         // Entry is not in index.json, add it
         getLogger().debug("Did not find {} in {}, adding it", module, metadataIndex);
-        entries.add(new MetadataIndexEntry(directory, module, null));
+        entries.add(new MetadataIndexEntry(directory, module, null, List.of(coordinates.group())));
 
         objectMapper.writeValue(metadataIndex, entries);
     }

tests/tck-build-logic/src/main/java/org/graalvm/internal/tck/model/MetadataIndexEntry.java

@@ -1,5 +1,7 @@
 package org.graalvm.internal.tck.model;
 
+import com.fasterxml.jackson.annotation.JsonProperty;
+
 import java.util.List;
 
 /*
@@ -8,6 +10,8 @@
 public record MetadataIndexEntry(
         String directory,
         String module,
-        List<String> requires
+        List<String> requires,
+        @JsonProperty("allowed-packages")
+        List<String> allowedPackages
 ) {
 }