misc minor tweaks

- download_edgent_asf.sh: echo check_sig cmds
- SensorAggregates sample: report Console url 
diff --git a/topology/src/main/java/org/apache/edgent/samples/topology/SensorsAggregates.java b/topology/src/main/java/org/apache/edgent/samples/topology/SensorsAggregates.java
index ac04c6e..c260ecf 100644
--- a/topology/src/main/java/org/apache/edgent/samples/topology/SensorsAggregates.java
+++ b/topology/src/main/java/org/apache/edgent/samples/topology/SensorsAggregates.java
@@ -25,6 +25,7 @@
 import static org.apache.edgent.analytics.math3.stat.Statistic.STDDEV;
 
 import org.apache.edgent.analytics.math3.json.JsonAnalytics;
+import org.apache.edgent.console.server.HttpServer;
 import org.apache.edgent.providers.development.DevelopmentProvider;
 import org.apache.edgent.providers.direct.DirectProvider;
 import org.apache.edgent.samples.utils.sensor.SimulatedSensors;
@@ -77,6 +78,9 @@
         
         sensors.print();
 
+        System.out.println("#### Console URL for the job: "
+            + tp.getServices().getService(HttpServer.class).getConsoleUrl());
+
         tp.submit(topology);
     }