Fixed last test + a mistake in other tests setup
Fixed last test + a mistake in other tests setup

 - filterSrv expects the parameter to init to be the actual
   dashboard object (I'll depend on that later on), so
   I had to pass dashboard.current in there, instead of
   dashboard
 - in the last test, the problem was exactly that again.

grafana/grafana,grafana/grafana,grafana/grafana,grafana/grafana,grafana/grafana,grafana/grafana,grafana/grafana