Remove hard-coded CSV in OpenShift Virt install docs (NVIDIA#359)

Signed-off-by: Michael Weiner <vikings412@gmail.com>

Author: mike-weiner

openshift/openshift-virtualization.rst

@@ -359,7 +359,9 @@ Create the cluster policy using the CLI:
 
    .. code-block:: console
 
-      $ oc get csv -n nvidia-gpu-operator gpu-operator-certified.v22.9.0 -ojsonpath={.metadata.annotations.alm-examples} | jq .[0] > clusterpolicy.json
+      $ oc get csv -n nvidia-gpu-operator $STARTING_CSV -o jsonpath='{.metadata.annotations.alm-examples}' | jq -r 'map(select(.kind == "ClusterPolicy")) | .[0]' > clusterpolicy.json
+
+   .. note:: ``$STARTING_CSV`` is the value of the ``startingCSV`` field in the ``Subscription`` CR created in the :ref:`install-gpu-ocp` section.
 
 #. Modify the ``clusterpolicy.json`` file as follows: