[health checker] Reenable broadcasting checks

These checks were dropped when adding fastboot support.

Change-Id: I8df0746a6bc82311caa08f89bbca592e69806c16
Reviewed-on: https://fuchsia-review.googlesource.com/c/infra/infra/+/389663
Reviewed-by: Nathan Mulcahey <nmulcahey@google.com>
Commit-Queue: Anirudh Mathukumilli <rudymathu@google.com>
diff --git a/cmd/health_checker/main.go b/cmd/health_checker/main.go
index 9e92ff2..05eab26 100644
--- a/cmd/health_checker/main.go
+++ b/cmd/health_checker/main.go
@@ -149,6 +149,11 @@
 	if err := checkSerial(device); err != nil {
 		return HealthCheckResult{nodename, unhealthyState, err.Error()}
 	}
+
+	// Check that the device is broadcasting. Is a no-op on NUCs.
+	if err := checkBroadcasting(n, device); err != nil {
+		return HealthCheckResult{nodename, unhealthyState, err.Error()}
+	}
 	return HealthCheckResult{nodename, healthyState, ""}
 }