helm: don't specify default topology domainlabels in rbd chart

Remove the bad default, add commented-out standard labels as a suggestion.

Fixes: #4775
Signed-off-by: Mark Glines <mark@glines.org>

charts/ceph-csi-rbd/values.yaml

@@ -299,14 +299,14 @@ provisioner:
 
   podSecurityContext: {}
 
-topology:
-  # domainLabels define which node labels to use as domains
-  # for CSI nodeplugins to advertise their domains
-  # NOTE: the value here serves as an example and needs to be
-  # updated with node labels that define domains of interest
-  domainLabels:
-    - failure-domain/region
-    - failure-domain/zone
+topology: {}
+# domainLabels define which node labels to use as domains
+# for CSI nodeplugins to advertise their domains
+# NOTE: the value here serves as an example and needs to be
+# updated with node labels that define domains of interest
+# domainLabels:
+#   - topology.kubernetes.io/region
+#   - topology.kubernetes.io/zone
 
 # readAffinity:
 # Enable read affinity for RBD volumes. Recommended to