Add Nova fibre channel support required packages

This patch is to support the nova patch that adds
Fibre Channel support to nova.  Fibre Channel requires
sysfsutils, sg3-utils, multipath-tools

Change-Id: I9e44ef9152f1916b245dba3be77076f0283fed44
diff --git a/files/rpms/n-cpu b/files/rpms/n-cpu
index f7054e8..149672a 100644
--- a/files/rpms/n-cpu
+++ b/files/rpms/n-cpu
@@ -2,3 +2,5 @@
 iscsi-initiator-utils
 lvm2
 genisoimage
+sysfsutils
+sg3_utils