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

git-svn-id: https://svn.apache.org/repos/asf/cxf/branches/2.7.x-fixes@1523117 13f79535-47bb-0310-9956-ffa450edef68
Back to snapshot until release


git-svn-id: https://svn.apache.org/repos/asf/cxf/branches/2.7.x-fixes@1523121 13f79535-47bb-0310-9956-ffa450edef68