Track results in object
Track results in object

Currently we are not tracking failures in the Rally object. This change
is to track when things fail. Failure is when we cannot find a taskid,
there might be a better way to do this.

Change-Id: I1f6b154db88566bc2556bf7229df1f071db4d580

jtaleric/browbeat,jkilpatr/browbeat,jtaleric/browbeat,jkilpatr/browbeat