Add open-iscsi packages for Nova compute nodes.

Begin splitting packages into service-specific files, n-cpu and
n-vol are the first.

Change-Id: I3e7c412ff125dbadd18b59af55fb7dea9ea17b07
diff --git a/files/apts/n-cpu b/files/apts/n-cpu
new file mode 100644
index 0000000..06c21a2
--- /dev/null
+++ b/files/apts/n-cpu
@@ -0,0 +1,4 @@
+# Stuff for diablo volumes
+lvm2
+open-iscsi
+open-iscsi-utils