Fix checkstyle errors when building archetype-generated apps

Checkstyle validation is now enabled by default in onos-dependencies
(archetypes' parent pom). We also add a reference to the archetypes' pom
to disable checkstyle, if needed.

Change-Id: I9b6e6cecf2d704f52ec1f118eae2aafd03cf0b9a
diff --git a/tools/package/archetypes/bundle/src/main/resources/archetype-resources/src/main/java/package-info.java b/tools/package/archetypes/bundle/src/main/resources/archetype-resources/src/main/java/package-info.java
index e9d8ea0..4a304bb 100644
--- a/tools/package/archetypes/bundle/src/main/resources/archetype-resources/src/main/java/package-info.java
+++ b/tools/package/archetypes/bundle/src/main/resources/archetype-resources/src/main/java/package-info.java
@@ -1,5 +1,8 @@
+#set( $symbol_pound = '#' )
+#set( $symbol_dollar = '$' )
+#set( $symbol_escape = '\' )
 /*
- * Copyright 2014-present Open Networking Foundation
+ * Copyright ${year}-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.