refactor(policy): add monitoring proto changes

src/policy/src/main/java/eu/teraflow/policy/model/PolicyRuleService.java

@@ -40,7 +40,8 @@ public class PolicyRuleService {
                     !serviceId.getContextId().isBlank(), "Context Id of Service Id must not be empty.");
             checkArgument(!serviceId.getId().isBlank(), "Service Id must not be empty.");
             this.serviceId = serviceId;
-            checkArgument(!deviceIds.isEmpty(), "Device Ids must not be empty.");
+            // TODO If device list not empty
+            // checkArgument(!deviceIds.isEmpty(), "Device Ids must not be empty.");
             this.deviceIds = deviceIds;
             this.isValid = true;
             this.exceptionMessage = "";