[WIP] apps CLI changes for karaf upgrade

Change-Id: I283efc39c7d4f4b31344f1d2d0cdd2b98a60932d
diff --git a/providers/null/src/main/java/org/onosproject/provider/nil/cli/CreateNullHosts.java b/providers/null/src/main/java/org/onosproject/provider/nil/cli/CreateNullHosts.java
index c9b9301..b8618e0 100644
--- a/providers/null/src/main/java/org/onosproject/provider/nil/cli/CreateNullHosts.java
+++ b/providers/null/src/main/java/org/onosproject/provider/nil/cli/CreateNullHosts.java
@@ -16,8 +16,8 @@
 
 package org.onosproject.provider.nil.cli;
 
-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.onlab.packet.IpAddress;
 import org.onlab.util.Tools;
 import org.onosproject.net.ConnectPoint;
@@ -69,7 +69,7 @@
 
 
     @Override
-    protected void execute() {
+    protected void doExecute() {
         NullProviders service = get(NullProviders.class);
         NetworkConfigService cfgService = get(NetworkConfigService.class);