feat(cinder-understack): enable the SVM filtering for the scheduler

The default list of scheduler filters to use does not call the volume
drivers filter function, which we need to filter the pool down to the
right SVM.

Author: nidzrai

components/cinder/values.yaml

@@ -9,6 +9,8 @@ conf:
     DEFAULT:
       enabled_backends: netapp_nvme
       default_volume_type: netapp_nvme
+      # add DriverFilter to the default list so our SVM filtering function gets called
+      scheduler_default_filters: DriverFilter,AvailabilityZoneFilter,CapacityFilter,CapabilitiesFilter
 
 # typically overridden by environmental
 # values, but should include all endpoints