Add Azure Managed Lustre Filesystem Check Subnet Size

[wolfgang-desalvador]

What does this PR do?

Adds the following Azure Managed Lustre commands:

• azmcp-azuremanagedlustre-filesystem-check-subnet-size: Get information about Azure Managed Lustre SKU [#110]

GitHub issue number?

Relates to:

• Add azmcp azuremanagedlustre filesystem check-subnet-size

Pre-merge Checklist

• Required for All PRs
  • Read contribution guidelines
  • PR title clearly describes the change
  • Commit history is clean with descriptive messages (cleanup guide)
  • Added comprehensive tests for new/modified functionality
  • Updated CHANGELOG.md for product changes (features, bug fixes, UI/UX, updated dependencies)
  • Spelling check passes: .\eng\common\spelling\Invoke-Cspell.ps1
• For MCP tool changes:
  • One tool per PR: This PR adds or modifies only one MCP tool for faster review cycles
  • Updated README.md documentation
  • Updated command list in /docs/azmcp-commands.md
  • Updated test prompts in /docs/e2eTestPrompts.md
  • For new or modified tool descriptions, ran the eng/tools/ToolDescriptionEvaluator tool and obtained a result >= 0.4

[Copilot]

Pull Request Overview

This PR adds a new Azure Managed Lustre command check-subnet-size that validates whether a subnet can host an Azure Managed Lustre filesystem for a given SKU and size. The command helps users verify subnet capacity before attempting to create AMLFS instances.

Key changes:

• Implements subnet validation logic for AMLFS deployments
• Adds comprehensive unit and live tests for the new functionality
• Updates documentation and command registration

Reviewed Changes

Copilot reviewed 13 out of 13 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
FileSystemCheckSubnetCommand.cs	Core command implementation for subnet size validation
FileSystemCheckSubnetOptions.cs	Options class defining command parameters
AzureManagedLustreService.cs	Service method to perform Azure API validation calls
IAzureManagedLustreService.cs	Interface definition for the new validation method
AzureManagedLustreOptionDefinitions.cs	Command-line option definitions for subnet-id and location
AzureManagedLustreJsonContext.cs	JSON serialization context registration
AzureManagedLustreSetup.cs	Command registration with the command system
FileSystemCheckSubnetCommandTests.cs	Unit tests for the new command
AzureManagedLustreCommandTests.cs	Live integration tests
test-resources.bicep	Test infrastructure updates with standardized output names
README.md	Documentation example for the new command
CHANGELOG.md	Release notes for the new feature
azmcp-commands.md	Command reference documentation