In some cases, deployers may want to use a repo instead of a deb file (limited connectivity, repo mgmt tools already in place, ...) This commit introduces this behavior in an optional manner: The default behavior is still using a deb file. If using an external repository, the repo used will be RabbitMQ recommended one hosted on packagecloud.io. Change-Id: If366d7411cffd59e4988ceba6fc47eac2b384ddf