SLING-4197 - Catch and log Throwable thrown from StartupListener methods

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1641555 13f79535-47bb-0310-9956-ffa450edef68
SLING-4514: Generating OSGI configs from content and starting services using osgi services

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1641561 13f79535-47bb-0310-9956-ffa450edef68
SLING-4153 - prevent timing based test failures for void package test

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1641563 13f79535-47bb-0310-9956-ffa450edef68