Configure UpdateStrategy on CSI Driver

[KevinThompsonYCRX]

Is your feature request related to a problem? Please describe.
In some very large clusters, it can take a very long time to roll out the CSI pods one-by-one during an update.

Describe the solution you'd like
Add a field csidriver.updateStrategy.rollingUpdate.maxUnavailable (or something more concise) to set the value for the daemonset

Describe alternatives you've considered
N/A, without being able to configure this to speed up the rollout, we are forced to either delete & recreate the whole DS, or raise the timeout on our helm releases to an unreasonable time range

Additional context
To be clear, this is the line I'd like to see variablized:
https://github.com/Dynatrace/dynatrace-operator/blob/v1.0.0/config/helm/chart/default/templates/Common/csi/daemonset.yaml#L283

[chrismuellner]

Thanks for the feature request!

We've created an internal ticket for it and will make this field configurable in the Helm chart in a future release.