Added package-info.java to all archetypes; including overlays.

Change-Id: I09482c6309783eae011a51b84ecc19335b2db0b2
diff --git a/tools/package/archetypes/uitopo/src/main/resources/archetype-resources/src/main/java/package-info.java b/tools/package/archetypes/uitopo/src/main/resources/archetype-resources/src/main/java/package-info.java
new file mode 100644
index 0000000..e9d8ea0
--- /dev/null
+++ b/tools/package/archetypes/uitopo/src/main/resources/archetype-resources/src/main/java/package-info.java
@@ -0,0 +1,20 @@
+/*
+ * Copyright 2014-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * ONOS application archetype.
+ */
+package ${package};
\ No newline at end of file