Detangling incubator: virtual nets, tunnels, resource labels, oh my

- virtual networking moved to /apps/virtual; with CLI & REST API
- tunnels and labels moved to /apps/tunnel; with CLI & REST API; UI disabled for now
- protobuf/models moved to /core/protobuf/models
- defunct grpc/rpc registry stuff left under /graveyard
- compile dependencies on /incubator moved to respective modules for compilation
- run-time dependencies will need to be re-tested for dependent apps

- /graveyard will be removed in not-too-distant future

Change-Id: I0a0b995c635487edcf95a352f50dd162186b0b39
diff --git a/web/gui/src/main/java/org/onosproject/ui/impl/topo/Topo2Jsonifier.java b/web/gui/src/main/java/org/onosproject/ui/impl/topo/Topo2Jsonifier.java
index 4ec61ce..0ef6faf 100644
--- a/web/gui/src/main/java/org/onosproject/ui/impl/topo/Topo2Jsonifier.java
+++ b/web/gui/src/main/java/org/onosproject/ui/impl/topo/Topo2Jsonifier.java
@@ -26,8 +26,7 @@
 import org.onosproject.cluster.ClusterService;
 import org.onosproject.cluster.ControllerNode;
 import org.onosproject.cluster.NodeId;
-import org.onosproject.incubator.net.PortStatisticsService;
-import org.onosproject.incubator.net.tunnel.TunnelService;
+import org.onosproject.net.statistic.PortStatisticsService;
 import org.onosproject.mastership.MastershipService;
 import org.onosproject.net.Annotated;
 import org.onosproject.net.Annotations;
@@ -128,7 +127,6 @@
     private StatisticService flowStatsService;
     private PortStatisticsService portStatsService;
     private TopologyService topologyService;
-    private TunnelService tunnelService;
     private UiExtensionService uiextService;
     private UiPreferencesService prefService;
 
@@ -160,7 +158,6 @@
         flowStatsService = directory.get(StatisticService.class);
         portStatsService = directory.get(PortStatisticsService.class);
         topologyService = directory.get(TopologyService.class);
-        tunnelService = directory.get(TunnelService.class);
         uiextService = directory.get(UiExtensionService.class);
         prefService = directory.get(UiPreferencesService.class);
     }
diff --git a/web/gui/src/main/java/org/onosproject/ui/impl/topo/model/UiSharedTopologyModel.java b/web/gui/src/main/java/org/onosproject/ui/impl/topo/model/UiSharedTopologyModel.java
index d70ecf6..6f8a706 100644
--- a/web/gui/src/main/java/org/onosproject/ui/impl/topo/model/UiSharedTopologyModel.java
+++ b/web/gui/src/main/java/org/onosproject/ui/impl/topo/model/UiSharedTopologyModel.java
@@ -22,8 +22,7 @@
 import org.onosproject.cluster.ControllerNode;
 import org.onosproject.cluster.RoleInfo;
 import org.onosproject.event.AbstractListenerManager;
-import org.onosproject.incubator.net.PortStatisticsService;
-import org.onosproject.incubator.net.tunnel.TunnelService;
+import org.onosproject.net.statistic.PortStatisticsService;
 import org.onosproject.mastership.MastershipEvent;
 import org.onosproject.mastership.MastershipListener;
 import org.onosproject.mastership.MastershipService;
@@ -117,8 +116,6 @@
     private PortStatisticsService portStatsService;
     @Reference(cardinality = ReferenceCardinality.MANDATORY)
     private TopologyService topologyService;
-    @Reference(cardinality = ReferenceCardinality.MANDATORY)
-    private TunnelService tunnelService;
 
     private final ClusterEventListener clusterListener =
             new InternalClusterListener();
diff --git a/web/gui/src/main/java/org/onosproject/ui/impl/topo/util/ServicesBundle.java b/web/gui/src/main/java/org/onosproject/ui/impl/topo/util/ServicesBundle.java
index 3ae7e90..e58b0f2 100644
--- a/web/gui/src/main/java/org/onosproject/ui/impl/topo/util/ServicesBundle.java
+++ b/web/gui/src/main/java/org/onosproject/ui/impl/topo/util/ServicesBundle.java
@@ -18,8 +18,7 @@
 
 import org.onlab.osgi.ServiceDirectory;
 import org.onosproject.cluster.ClusterService;
-import org.onosproject.incubator.net.PortStatisticsService;
-import org.onosproject.incubator.net.tunnel.TunnelService;
+import org.onosproject.net.statistic.PortStatisticsService;
 import org.onosproject.mastership.MastershipAdminService;
 import org.onosproject.mastership.MastershipService;
 import org.onosproject.net.device.DeviceService;
@@ -45,7 +44,6 @@
     private DriverService driverService;
     private HostService hostService;
     private LinkService linkService;
-    private TunnelService tunnelService;
 
     private MastershipService mastershipService;
     private MastershipAdminService mastershipAdminService;
@@ -70,7 +68,6 @@
         driverService = directory.get(DriverService.class);
         hostService = directory.get(HostService.class);
         linkService = directory.get(LinkService.class);
-        tunnelService = directory.get(TunnelService.class);
 
         mastershipService = directory.get(MastershipService.class);
         mastershipAdminService = directory.get(MastershipAdminService.class);
@@ -135,15 +132,6 @@
     }
 
     /**
-     * Returns a reference to the tunnel service.
-     *
-     * @return tunnel service reference
-     */
-    public TunnelService tunnel() {
-        return tunnelService;
-    }
-
-    /**
      * Returns a reference to the mastership service.
      *
      * @return mastership service reference