Add Local SSD support

[ndr-ds]

Motivation

When deploying networks on GCP, using local SSDs give us good performance improvements.

Proposal

Add support for deploying networks using local SSDs. Keep in mind that this will only be used when deploying GCP networks, this won't be used ever for local networks for obvious reasons (it already always runs on the local disk).
It made more sense for the YAML files to setup the local CSI driver to live here to avoid some directory gymnastics on the linera-infra side.

Test Plan

Deployed networks using this code

Release Plan

• Nothing to do / These changes follow the usual release cycle.

[ndr-ds]

• Make ScyllaDB replication factor configurable #3788 : 2 dependent PRs (#3638 , #3880 )
• Add Local SSD support #3879 👈 (View in Graphite)
• Add dual store support #3878
• Recursively create parent directories when creating config dir #3897
• Adjust state hash computation bucket #3877
• Actually use backend config #3876
• Make release the default mode for Dockerfile #3871 : 1 other dependent PR (#3113 )
• main

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[ndr-ds]

Merge activity

• May 9, 5:25 PM EDT: A user started a stack merge that includes this pull request via Graphite.
• May 9, 5:32 PM EDT: Graphite rebased this pull request as part of a merge.
• May 9, 5:33 PM EDT: @ndr-ds merged this pull request with Graphite.