Use released versions for release

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1562732 13f79535-47bb-0310-9956-ffa450edef68
[maven-release-plugin] prepare release org.apache.sling.jcr.base-2.2.0

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1562733 13f79535-47bb-0310-9956-ffa450edef68
[maven-release-plugin] prepare for next development iteration

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1562735 13f79535-47bb-0310-9956-ffa450edef68
Switch back to latest snapshot

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1562737 13f79535-47bb-0310-9956-ffa450edef68