flows cmd pretty print

Change-Id: I29b0971a5a862c602f8cd36f864f173c6d8330d6
diff --git a/cli/src/main/resources/OSGI-INF/blueprint/shell-config.xml b/cli/src/main/resources/OSGI-INF/blueprint/shell-config.xml
index 5284477..6b867b3 100644
--- a/cli/src/main/resources/OSGI-INF/blueprint/shell-config.xml
+++ b/cli/src/main/resources/OSGI-INF/blueprint/shell-config.xml
@@ -72,6 +72,9 @@
 
         <command>
             <action class="org.onlab.onos.cli.net.FlowsListCommand"/>
+            <completers>
+                <ref component-id="deviceIdCompleter"/>
+            </completers>
         </command>
 
         <command>