Add Hudson job which runs JBDS SWTBot tests

We need Hudson job which will run JBDS/JBT SWTBot tests.
Job should be started manually for the beginning because we will have to change tests to run correctly on Hudson. Once we will have SWTBot tests running correctly we will start this job automatically.
Job should just run SWTBot tests not build complete JBT/JBDS. We need to minimize time taken by job. It will make developing SWTBot tests much faster.