L2SS-844: Replace grafana dashboards by ones from central repo.

.gitmodules

docker-compose/grafana/dashboards

docker-compose/grafana/dashboards/apsct.json

docker-compose/grafana/dashboards/apspu.json

docker-compose/grafana/dashboards/docker.json

docker-compose/grafana/dashboards/home.json

docker-compose/grafana/dashboards/home2.json

docker-compose/grafana/dashboards/lcu.json

docker-compose/grafana/dashboards/recv.json

docker-compose/grafana/dashboards/sdp.json

docker-compose/grafana/dashboards/sensors.json

docker-compose/grafana/dashboards/sst.json

docker-compose/grafana/dashboards/svg.json

docker-compose/grafana/dashboards/xst.json

docker-compose/grafana/grafana.ini