Set missing disk_size_gb value

[sudheer-quad]

This PR defines the value for disk_size_gb, which was previously declared in the blueprint but left unassigned.

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[gemini-code-assist]

Summary of Changes

Hello, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request addresses a configuration gap in the A3 Mega Slurm blueprint by explicitly defining the disk_size_gb variable. This change ensures that the deployment environment has a specified disk size, preventing potential issues arising from unassigned configuration parameters.

Highlights

• Configuration Update: Added the missing disk_size_gb variable to the A3 Mega Slurm blueprint to ensure proper disk allocation.

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[gemini-code-assist]

Code Review

This pull request adds a "disk_size_gb" variable with a default value of 100 to the "vars" section of the "a3mega-slurm-blueprint.yaml" blueprint. There are no review comments, and I have no additional feedback to provide.