Tweaked tests. Working good enough to focus on the base class stuff now.

* Still need to implement an ArriveConfirmedTask that is similar to
  the ReturnTask, so a caller can await the actual arrival, not just the
  arrive at the proxy node.
    * Analog to confirming a person landing at La Guardia and not just
      boarded the plane successfully.

Signed-off-by: William Raiford <bill.mybiz@gmail.com>