Converted all executors that previously used namedThreads to use groupedThreads instead.

Change-Id: I048709308270de5b7552bc4e8395b0f7201d5949
diff --git a/core/store/dist/src/main/java/org/onosproject/store/device/impl/GossipDeviceStore.java b/core/store/dist/src/main/java/org/onosproject/store/device/impl/GossipDeviceStore.java
index d29fadb..602fd9f 100644
--- a/core/store/dist/src/main/java/org/onosproject/store/device/impl/GossipDeviceStore.java
+++ b/core/store/dist/src/main/java/org/onosproject/store/device/impl/GossipDeviceStore.java
@@ -88,8 +88,8 @@
 import static com.google.common.base.Verify.verify;
 import static java.util.concurrent.Executors.newSingleThreadScheduledExecutor;
 import static org.apache.commons.lang3.concurrent.ConcurrentUtils.createIfAbsentUnchecked;
+import static org.onlab.util.Tools.groupedThreads;
 import static org.onlab.util.Tools.minPriority;
-import static org.onlab.util.Tools.namedThreads;
 import static org.onosproject.cluster.ControllerNodeToNodeId.toNodeId;
 import static org.onosproject.net.DefaultAnnotations.merge;
 import static org.onosproject.net.device.DeviceEvent.Type.*;
@@ -194,10 +194,10 @@
         clusterCommunicator.addSubscriber(
                 GossipDeviceStoreMessageSubjects.PORT_INJECTED, new PortInjectedEventListener());
 
-        executor = Executors.newCachedThreadPool(namedThreads("onos-device-fg-%d"));
+        executor = Executors.newCachedThreadPool(groupedThreads("onos/device", "fg-%d"));
 
         backgroundExecutor =
-                newSingleThreadScheduledExecutor(minPriority(namedThreads("onos-device-bg-%d")));
+                newSingleThreadScheduledExecutor(minPriority(groupedThreads("onos/device", "bg-%d")));
 
         // start anti-entropy thread
         backgroundExecutor.scheduleAtFixedRate(new SendAdvertisementTask(),