Update grafana dashboard configuration (#660)
Update grafana dashboard configuration (#660)


jmuk/mixer,xiaolanz/mixer,guptasu/mixer,ZackButcher/mixer,rkpagadala/mixer,jmuk/mixer,rkpagadala/mixer,istio/old_mixer_repo,ZackButcher/mixer,guptasu/mixer,douglas-reid/mixer,ZackButcher/mixer,douglas-reid/mixer,rkpagadala/mixer,jmuk/mixer,istio/old_mixer_repo,douglas-reid/mixer,xiaolanz/mixer,xiaolanz/mixer,guptasu/mixer,istio/old_mixer_repo