[maven-release-plugin] prepare for next development iteration

git-svn-id: https://svn.apache.org/repos/asf/cxf/trunk@1543931 13f79535-47bb-0310-9956-ffa450edef68
Back to snapshot until rlease

git-svn-id: https://svn.apache.org/repos/asf/cxf/trunk@1543934 13f79535-47bb-0310-9956-ffa450edef68