Openstack Cinder CSI driver Operator allow parameter "node-volume-attach-limit"

• Proposed title of this feature request

Set up "node-volume-attach-limit" in openstack-cinder-csi-driver-operator

• What is the nature and description of the request?

While using the openstack-cinder-csi-driver-operator is not possible to set up the parameter "node-volume-attach-limit" , everytime a configuration change is made the operator unmakes the changes making it impossible to set up any new configurations.

kind: ConfigMap
apiVersion: v1
metadata:
  name: openstack-cinder-config
  namespace: openshift-cluster-csi-drivers
data:
  cloud.conf: |
    [Global]
    use-clouds = true
    clouds-file = /etc/kubernetes/secret/clouds.yaml
    cloud = openstack
  multiaz-cloud.conf: |
    [Global]
    use-clouds = true
    clouds-file = /etc/kubernetes/secret/clouds.yaml
    cloud = openstack
    [BlockStorage] <---[1]
    ignore-volume-az = yes 

[1]: Not possible to add configuration in [BlockStorage] section as it gets going back to default config.

This configuration is already possible in upstream: https://github.com/kubernetes/cloud-provider-openstack/blob/master/docs/cinder-csi-plugin/using-cinder-csi-plugin.md#block-storage

• Why does the customer need this? (List the business requirements here)

Customers want to limit the amount of Cinder block devices that get mounted in each(limiting this to 25)

• List any affected packages or components.