[release-notes] Added `ryu` to virt section; commented it out for now, review is pending.

[Pete Travis]

commit 6db29b37a88e8081907123c979fb6cf50a81a7c8
Author: Pete Travis <immanetize at fedoraproject.org>
Date:   Sun May 12 19:19:57 2013 -0600

    Added `ryu` to virt section; commented it out for now, review is pending.

 en-US/Virtualization.xml |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)
---
diff --git a/en-US/Virtualization.xml b/en-US/Virtualization.xml
index 285a2dd..9ec5839 100644
--- a/en-US/Virtualization.xml
+++ b/en-US/Virtualization.xml
@@ -61,6 +61,15 @@
     </para>
   </section>
   
+<!-- Review for ryu pending, https://bugzilla.redhat.com/show_bug.cgi?id=909674
+  <section>
+    <title>Ryu</title>
+    <para>
+      <package>Ryu</package> is added for building block as <productname>OpenFlow</productname> controller for Software Defined Networking. It provides an L2-isolated network with <productname>OpenStack</productname>.
+    </para>
+  </section>
+  -->
+  
   <section>
     <title>OpenShift</title>
     <para>