Adding a very simple output for pingall

Change-Id: I7575d4f6d1c45cdfaeb6a10d1bdc8371bcb25a29
(cherry picked from commit 134c3c051f1d8bdbaee66c4ffee7579e53ffc1f0)
diff --git a/src/main/java/org/onosproject/t3/api/TroubleshootService.java b/src/main/java/org/onosproject/t3/api/TroubleshootService.java
index 28ff728..ab7ff29 100644
--- a/src/main/java/org/onosproject/t3/api/TroubleshootService.java
+++ b/src/main/java/org/onosproject/t3/api/TroubleshootService.java
@@ -20,6 +20,7 @@
 import org.onosproject.net.ConnectPoint;
 import org.onosproject.net.HostId;
 import org.onosproject.net.flow.TrafficSelector;
+import org.onosproject.t3.impl.Generator;
 
 import java.util.List;
 import java.util.Set;
@@ -39,6 +40,14 @@
     List<StaticPacketTrace> pingAll(EthType.EtherType type);
 
     /**
+     * Requests a static trace be performed between all hosts in the network, given a type of traffic.
+     *
+     * @param type the etherType of the traffic we want to trace.
+     * @return a trace result
+     */
+    Generator<Set<StaticPacketTrace>> pingAllGenerator(EthType.EtherType type);
+
+    /**
      * Requests a static trace be performed between the two hosts in the network, given a type of traffic.
      *
      * @param sourceHost      source host