[maven-release-plugin] copy for tag 3.0.0

git-svn-id: https://svn.apache.org/repos/asf/synapse/tags/3.0.0@1776582 13f79535-47bb-0310-9956-ffa450edef68
tree: b3656bc7f920a19add6e0a1eae871890c5b0838f
  1. modules/
  2. repository/
  3. pom.xml