Move dashboards and datasources into package

MANIFEST.in

brian_dashboard_manager/dashboards/cls_peers.json

brian_dashboard_manager/dashboards/home.json

brian_dashboard_manager/dashboards/ias_peers.json

...dashboard_manager/dashboards/infrastructure_backbone.json

brian_dashboard_manager/dashboards/peers.json

...rd_manager/dashboards/services_automated_l2_circuits.json

brian_dashboard_manager/dashboards/services_cls.json

brian_dashboard_manager/dashboards/services_geant_open.json

brian_dashboard_manager/dashboards/services_ias.json

brian_dashboard_manager/dashboards/services_l2_circuits.json

brian_dashboard_manager/dashboards/services_lhcone.json

brian_dashboard_manager/dashboards/services_mdvpn.json

brian_dashboard_manager/dashboards/services_re.json

brian_dashboard_manager/datasources/InfluxDB.json

brian_dashboard_manager/grafana/dashboard.py

brian_dashboard_manager/grafana/datasource.py

dashboards/.gitkeep

dashboards/routerdashboard.json