Allow parameters block for StorageClass

[mdfaizsiddiqui]

Documentation around parameters block for storageClass - https://kubernetes.io/docs/concepts/storage/storage-classes/#parameters

For our use-case we wanted the volume to be of xfs file system and we were able to achieve it with this block -

parameters:
  fsType: xfs

So, I am adding a way in helm chart to specify parameters block for the storageClass.

[derekbit]

@mdfaizsiddiqui local-path-provisioner actually creates a directory on a local filesystem (it can be xfs, ext4 and so one), so the fsType seems not really used. Can you elaborate more on the fsType? Thank you.

[JuniorJPDJ]

this is also useful if you want to achieve other things, like eg. limiting default storageClass to some nodePath:

parameters:
  nodePath: /srv/k8s/pv/default

[derekbit]

@mdfaizsiddiqui Can you help resolve the conflicts? Thank you.

[mdfaizsiddiqui]

@mdfaizsiddiqui Can you help resolve the conflicts? Thank you.

Hey, I've fixed all the conflicts, but due to this new change I had to move the parameter introduced as part of @AlbanBedel PR to the new parameters section.

[mdfaizsiddiqui]

@derekbit can you help merge this PR, thanks.

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