[moc-sdk-for-go] Implement Graceful Shutdown Option for VM Stop Operation

[arg5739]

Problem Statement

When users select "Stop" for a virtual machine (VM) through the portal or CLI, the system currently performs an immediate "Turn Off" operation rather than executing a graceful shutdown. This behavior does not align with user expectations and has become a significant pain point, as customers anticipate a proper shutdown sequence when choosing to stop their VM.

Related PRs

• [MOC] microsoft/moc#406
• [WSSD-SDK] https://github.com/microsoft/wssd-sdk-for-go/pull/343
• [MOC-SDK] #362
• [MOCCLI] https://github.com/microsoft/moccli/pull/352
• [CloudAgent] https://github.com/microsoft/wssdcloudagent/pull/1620
• [NodeAgent] https://github.com/microsoft/wssdagent/pull/1454

WorkItem

https://msazure.visualstudio.com/One/_workitems/edit/30775126

Summary of changes

These PRs accomplish the following:

• Provide new power option StopGraceful
• Implement StopGraceful shutdown
  The parameter to request non-graceful VM shutdown. True value indicates non-graceful shutdown whereas false indicates otherwise. Default value for this flag is false if not specified
• Make previous "Stop" calls "StopGraceful" with skipShutdown=true to force immediate shutdown. Maintaining current Stop behaviour.

Testing

Validate current Stop functionality (making sure new changes wont break current user experience.)

Validate Graceful shutdown option

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[arg5739]

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