Make dependency on libvirt dynamic

Fixes bug 1184960

Change-Id: If702807d9ae326bf216a2e076ce61062045d7c6b
diff --git a/files/rpms-suse/nova b/files/rpms-suse/nova
index a3fd479..1be24a8 100644
--- a/files/rpms-suse/nova
+++ b/files/rpms-suse/nova
@@ -7,11 +7,11 @@
 iptables
 iputils
 kpartx
-kvm
+kvm # NOPRIME
 # qemu as fallback if kvm cannot be used
-qemu
+qemu # NOPRIME
 libvirt # NOPRIME
-libvirt-python
+libvirt-python # NOPRIME
 libxml2-python
 mysql-community-server # NOPRIME
 parted