Added SetDiskSanPolicy dependency to enable writable JBOD disks on Windows

[ankitsharma-99]

Adds a new SetDiskSanPolicy dependency that sets the Windows SAN policy to OnlineAll via DiskPart before disk initialization runs. This ensures all newly discovered disks are brought online and writable.

The implementation is idempotent: it queries the current policy first (san) and only issues san policy=onlineall if the policy is not already OnlineAll. It is a no-op on Linux (SAN policy is Windows-only), so it is safe to include in cross-platform profiles.

This dependency can be added as follows in profile:

{ "Type": "SetDiskSanPolicy", "Parameters": { "Scenario": "SetSanPolicyOnlineAll" } },

[ankitsharma-99]

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