add controlrestapi as a datasource

Closes L2SS-2153

README.md

@@ -20,6 +20,7 @@ as configured in the `dashboards/` directory:
 * Loki, at `http://loki:3100`, serving logs,
 * Alerta, at `http://alerta-server:8080`, serving the Alerta HTTP API,
 * Grafana, serving its own HTTP API.
+* Station Control Rest Api, serving the Control Rest Api. Currently Used for Controlling Antenna Statuses. 
 
 ## Development