Add support for --extra-create-metadata for CSI provisioner in Helm chart

[jwesolowski-rms]

Is your feature request related to a problem?/Why is this needed
When using the Helm chart, I am unable to set --extra-create-metadata=true for the CSI provisioner. The only options can be seen here:

- name: csi-provisioner
   image: {{ printf "%s:%s" .Values.sidecars.provisionerImage.repository .Values.sidecars.provisionerImage.tag }}
   args:
     - --csi-address=$(ADDRESS)
     - --v=5
     {{- if .Values.enableVolumeScheduling }}
     - --feature-gates=Topology=true
     {{- end}}
     - --enable-leader-election
     - --leader-election-type=leases

/feature

Describe the solution you'd like in detail
It would be nice if we added this as a flag similar to the .Values.enableVolumeScheduling that would conditionally add the --extra-create-metadata=true to the provisioner.

Describe alternatives you've considered
Another alternative I thought of would be to have a list value that would allow us to add arbitrary args to each container. This would make it so we didn't need to do a code change to the Helm chart every time we want to add a new feature that requires an arg chance. For example, we could have a .Values.additionalArgsCSIProvisioner that is a list of additional arguments to set for the provisioner container. This could be expanded to support the other containers as well.

Rather than immediately open a pull request, I wanted to get some feedback on these possible approaches and see what the maintainers and community felt was the right approach.

[kcking]

I went ahead and made a first attempt at this here: #577

It's working well in our EKS 1.17 cluster

[jwesolowski-rms]

Closed by #577