[maven-release-plugin] prepare release cxf-dosgi-ri-1.6.0

git-svn-id: https://svn.apache.org/repos/asf/cxf/dosgi/trunk@1558807 13f79535-47bb-0310-9956-ffa450edef68
[maven-release-plugin] prepare for next development iteration

git-svn-id: https://svn.apache.org/repos/asf/cxf/dosgi/trunk@1558809 13f79535-47bb-0310-9956-ffa450edef68