BUG-1769: Controller project no longer supports non-karaf distributions.

This adds a project-local karaf distribution build, so that users can
check out the Group Based Policy and run it with just the controller
build.

Change-Id: Ide0775827bf0951c32b9eefea5c8742c2745d0b0
Signed-off-by: Thomas Bachman <tbachman@yahoo.com>