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

Change-Id: I8d6ae6185ada30a92481ddb7b603af323656dc3a
diff --git a/web/gui/src/main/java/org/onosproject/ui/impl/topo/cli/UiCacheHostsCommand.java b/web/gui/src/main/java/org/onosproject/ui/impl/topo/cli/UiCacheHostsCommand.java
index 99a0360..ffb203c 100644
--- a/web/gui/src/main/java/org/onosproject/ui/impl/topo/cli/UiCacheHostsCommand.java
+++ b/web/gui/src/main/java/org/onosproject/ui/impl/topo/cli/UiCacheHostsCommand.java
@@ -17,11 +17,13 @@
 package org.onosproject.ui.impl.topo.cli;
 
 import org.apache.karaf.shell.api.action.Command;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
 import org.onosproject.ui.impl.topo.model.UiSharedTopologyModel;
 
 /**
  * CLI command to list the UiH0osts stored in the ModelCache.
  */
+@Service
 @Command(scope = "onos", name = "ui-cache-hosts",
         description = "Lists UiHosts in the Model Cache")
 public class UiCacheHostsCommand extends AbstractUiCacheElementCommand {