[WIP] Upgrade ONOS to karaf version 4.2.1

Change-Id: I7cd40c995bdf1c80f94b1895fb3344e32404c7fa
diff --git a/cli/src/main/java/org/onosproject/cli/app/ApplicationsListCommand.java b/cli/src/main/java/org/onosproject/cli/app/ApplicationsListCommand.java
index 5b0c1ef..24b2da1 100644
--- a/cli/src/main/java/org/onosproject/cli/app/ApplicationsListCommand.java
+++ b/cli/src/main/java/org/onosproject/cli/app/ApplicationsListCommand.java
@@ -20,8 +20,9 @@
 import java.util.Comparator;
 import java.util.List;
 
-import org.apache.karaf.shell.commands.Command;
-import org.apache.karaf.shell.commands.Option;
+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.onosproject.app.ApplicationService;
 import org.onosproject.cli.AbstractShellCommand;
 import org.onosproject.utils.Comparators;
@@ -37,6 +38,7 @@
 /**
  * Lists application information.
  */
+@Service
 @Command(scope = "onos", name = "apps",
         description = "Lists application information")
 public class ApplicationsListCommand extends AbstractShellCommand {
@@ -61,7 +63,7 @@
 
 
     @Override
-    protected void execute() {
+    protected void doExecute() {
         ApplicationService service = get(ApplicationService.class);
         List<Application> apps = newArrayList(service.getApplications());
         if (sortByName) {