SLING-3244 - upgrade sling.api in commons/testing

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1541469 13f79535-47bb-0310-9956-ffa450edef68
SLING-3049 - Make Logback Stacktrace Packaging data support OSGi aware

Adding OSGi aware PackagingDataCalculator

Also disabled animal-sniffer-maven-plugin as it is causing issue. See bug notes for details

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1541471 13f79535-47bb-0310-9956-ffa450edef68
SLING-3231 - Not able to set multiple framework property via command line args

Fixed support for passing multiple options like -Dkey=value

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1541482 13f79535-47bb-0310-9956-ffa450edef68