[WIP] Add @Service tags to all commands and completers

Change-Id: I8d6ae6185ada30a92481ddb7b603af323656dc3a
diff --git a/providers/null/src/main/java/org/onosproject/provider/nil/cli/TopologyShapeCompleter.java b/providers/null/src/main/java/org/onosproject/provider/nil/cli/TopologyShapeCompleter.java
index 52a78cb1..dec1467 100644
--- a/providers/null/src/main/java/org/onosproject/provider/nil/cli/TopologyShapeCompleter.java
+++ b/providers/null/src/main/java/org/onosproject/provider/nil/cli/TopologyShapeCompleter.java
@@ -16,6 +16,7 @@
 package org.onosproject.provider.nil.cli;
 
 import com.google.common.collect.ImmutableList;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
 import org.onosproject.cli.AbstractChoicesCompleter;
 
 import java.util.List;
@@ -23,6 +24,7 @@
 /**
  * Topology shape completer.
  */
+@Service
 public class TopologyShapeCompleter extends AbstractChoicesCompleter {
     @Override
     public List<String> choices() {