Support openstack subnet list command in OpenstackNetworking app

Change-Id: Id7fb104a139c024923aecd7439104e2242ce3588
diff --git a/apps/openstacknetworking/app/src/main/resources/OSGI-INF/blueprint/shell-config.xml b/apps/openstacknetworking/app/src/main/resources/OSGI-INF/blueprint/shell-config.xml
index bb8bbdd..f21a250 100644
--- a/apps/openstacknetworking/app/src/main/resources/OSGI-INF/blueprint/shell-config.xml
+++ b/apps/openstacknetworking/app/src/main/resources/OSGI-INF/blueprint/shell-config.xml
@@ -19,6 +19,9 @@
             <action class="org.onosproject.openstacknetworking.cli.OpenstackNetworkListCommand"/>
         </command>
         <command>
+            <action class="org.onosproject.openstacknetworking.cli.OpenstackSubnetListCommand"/>
+        </command>
+        <command>
             <action class="org.onosproject.openstacknetworking.cli.OpenstackPortListCommand"/>
         </command>
         <command>