[WIP] Upgrade ONOS to karaf version 4.2.1

Change-Id: I7cd40c995bdf1c80f94b1895fb3344e32404c7fa
diff --git a/cli/src/main/java/org/onosproject/cli/app/ApplicationCommand.java b/cli/src/main/java/org/onosproject/cli/app/ApplicationCommand.java
index 4db129d..55e7a93 100644
--- a/cli/src/main/java/org/onosproject/cli/app/ApplicationCommand.java
+++ b/cli/src/main/java/org/onosproject/cli/app/ApplicationCommand.java
@@ -16,8 +16,9 @@
 package org.onosproject.cli.app;
 
 import com.google.common.io.ByteStreams;
-import org.apache.karaf.shell.commands.Argument;
-import org.apache.karaf.shell.commands.Command;
+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.onosproject.app.ApplicationAdminService;
 import org.onosproject.cli.AbstractShellCommand;
 import org.onosproject.core.Application;
@@ -31,6 +32,7 @@
 /**
  * Manages application inventory.
  */
+@Service
 @Command(scope = "onos", name = "app",
         description = "Manages application inventory")
 public class ApplicationCommand extends AbstractShellCommand {
@@ -51,7 +53,7 @@
     String[] names = null;
 
     @Override
-    protected void execute() {
+    protected void doExecute() {
         ApplicationAdminService service = get(ApplicationAdminService.class);
         if (command.equals(INSTALL)) {
             for (String name : names) {