[WIP] Upgrade ONOS to karaf version 4.2.1

Change-Id: I7cd40c995bdf1c80f94b1895fb3344e32404c7fa
diff --git a/cli/src/main/java/org/onosproject/cli/net/vnet/VirtualNetworkPacketRequestCommand.java b/cli/src/main/java/org/onosproject/cli/net/vnet/VirtualNetworkPacketRequestCommand.java
index 2a88198..20b33fd 100644
--- a/cli/src/main/java/org/onosproject/cli/net/vnet/VirtualNetworkPacketRequestCommand.java
+++ b/cli/src/main/java/org/onosproject/cli/net/vnet/VirtualNetworkPacketRequestCommand.java
@@ -19,9 +19,10 @@
 import com.fasterxml.jackson.databind.JsonNode;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.node.ArrayNode;
-import org.apache.karaf.shell.commands.Argument;
-import org.apache.karaf.shell.commands.Command;
-import org.apache.karaf.shell.commands.Option;
+import org.apache.karaf.shell.api.action.Argument;
+import org.apache.karaf.shell.api.action.Command;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.apache.karaf.shell.api.action.Option;
 import org.onlab.packet.Ip6Address;
 import org.onlab.packet.IpPrefix;
 import org.onlab.packet.MacAddress;
@@ -50,6 +51,7 @@
 /**
  * Tests virtual network packet requests.
  */
+@Service
 @Command(scope = "onos", name = "vnet-packet",
         description = "Tests virtual network packet requests")
 public class VirtualNetworkPacketRequestCommand extends AbstractShellCommand {
@@ -133,7 +135,7 @@
     private List<String> extHdrStringList = null;
 
     @Override
-    protected void execute() {
+    protected void doExecute() {
         VirtualNetworkService service = get(VirtualNetworkService.class);
         PacketService virtualPacketService = service.get(NetworkId.networkId(networkId), PacketService.class);