Support in-flight requests for warm metal driver

[vadasambar]

Most of the context around this can be found in the discussion in #71 (comment)

TL:DR;

1. warm metal can put pressure on disks (via CRI/containerd)
2. having a way to queue requests instead of processing them immediately can distribute the load on the disks

TODO

• decide an approach to implement this
• create a PR
• get reviews
• DONE

[vadasambar]

Going through https://github.com/kubernetes/enhancements/tree/master/keps/sig-node/3673-kubelet-parallel-image-pull-limit to understand how kubelet is implementing it.

[vadasambar]

^ basically uses a buffered channel to limit max in-flight pulls. csi-driver-image can use a similar approach. Started a WIP PR: #81

[mugdha-adhav]

@vadasambar assigning this issue to you as you have already started working on it.

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed in 7 days if no further activity occurs.

[github-actions]

Closing this issue after a prolonged period of inactivity. If this issue is still present in the latest release, please feel free to create a new issue with up-to-date information.