Support hostname completing feature for openstack-node-init command

Change-Id: I3afca9ad5fe4bf2a35a9b65f9ea13cb093a09083
diff --git a/apps/openstacknode/app/src/main/resources/OSGI-INF/blueprint/shell-config.xml b/apps/openstacknode/app/src/main/resources/OSGI-INF/blueprint/shell-config.xml
index 4629980..19ec8e0 100644
--- a/apps/openstacknode/app/src/main/resources/OSGI-INF/blueprint/shell-config.xml
+++ b/apps/openstacknode/app/src/main/resources/OSGI-INF/blueprint/shell-config.xml
@@ -27,6 +27,9 @@
         </command>
         <command>
             <action class="org.onosproject.openstacknode.cli.OpenstackNodeInitCommand"/>
+            <completers>
+                <ref component-id="hostnameCompleter"/>
+            </completers>
         </command>
     </command-bundle>