[maven-release-plugin] prepare release expression-evaluator-2.1

git-svn-id: https://svn.apache.org/repos/asf/archiva/redback/redback-components/trunk@1558657 13f79535-47bb-0310-9956-ffa450edef68
[maven-release-plugin] prepare for next development iteration

git-svn-id: https://svn.apache.org/repos/asf/archiva/redback/redback-components/trunk@1558660 13f79535-47bb-0310-9956-ffa450edef68