[WIP] Upgrade ONOS to karaf version 4.2.1

Change-Id: I7cd40c995bdf1c80f94b1895fb3344e32404c7fa
diff --git a/cli/src/main/java/org/onosproject/cli/MarkCommand.java b/cli/src/main/java/org/onosproject/cli/MarkCommand.java
index dc119ed..f7881f3 100644
--- a/cli/src/main/java/org/onosproject/cli/MarkCommand.java
+++ b/cli/src/main/java/org/onosproject/cli/MarkCommand.java
@@ -20,9 +20,10 @@
 import java.util.List;
 import java.util.stream.Collectors;
 
-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.slf4j.Logger;
 
 import com.google.common.collect.ImmutableList;
@@ -30,6 +31,7 @@
 /**
  * CLI command which just log message to ONOS log for ease of debugging, etc.
  */
+@Service
 @Command(scope = "onos", name = "mark",
          description = "Mark message in the log")
 public class MarkCommand extends AbstractShellCommand {
@@ -49,7 +51,7 @@
     List<String> message = ImmutableList.of(MARK);
 
     @Override
-    protected void execute() {
+    protected void doExecute() {
 
         Logger log = getLogger(loggerName);