SLING-3009 and SLING-3029:
 SLING-3009 : add support for deploying osgi bundles via the configured sling launchpad server
                   there are two modes: locally (via SLING-3019) and via mvn sling:install
 SLING-3029 : allow to connect to the sling launchpad server both in 'run' and in 'debug' mode. 'debug' mode sets all the necessary settings incl the source code lookup

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1518220 13f79535-47bb-0310-9956-ffa450edef68