[maven-release-plugin] prepare release org.apache.sling.installer.core-3.5.4

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1620794 13f79535-47bb-0310-9956-ffa450edef68
[maven-release-plugin] prepare for next development iteration

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1620796 13f79535-47bb-0310-9956-ffa450edef68
Adjust to latest core snapshot

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1620797 13f79535-47bb-0310-9956-ffa450edef68
Use released installer core

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1620798 13f79535-47bb-0310-9956-ffa450edef68
[maven-release-plugin] prepare release org.apache.sling.installer.provider.jcr-3.1.8

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1620799 13f79535-47bb-0310-9956-ffa450edef68