reports is read-only, so can never be a property.

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1475948 13f79535-47bb-0310-9956-ffa450edef68
enrich dutch resource bundle

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1475950 13f79535-47bb-0310-9956-ffa450edef68