cpi should have a parameter to create new generation vms for efi support

[ramonskie]

as noble now supports the efi bootloader
we should make the following property configurable
'hyperVGeneration' => 'V1' or made default to V2

https://github.com/cloudfoundry/bosh-azure-cpi-release/blob/master/src/bosh_azure_cpi/lib/cloud/azure/restapi/azure_client.rb#L1154

[HappyTobi]

Hi @ramonskie,

Yes to enable an efi boot on azure you have to generate an gen2 / hypervGeneration v2 image

Docs: Azure generation-2 Hypervisor

Overall I think the efi / image generationshould be part of the Stemcell -> stemcell.MF - cloud_properties.

The image cloud_properties section is uploaded as meta data to the storage account where cpi can get all image information.

So we should first think of a new property that is part of the cloud_properties that could be used later by the cpi implementation.

[s4heid]

236ff8e (#710) ensures that compute gallery images are created with a specified hyperv-generation, if the stemcell manifest contains a parameter generation, e.g.:

# ...
cloud_properties:
  generation: gen2

Default is gen1, which ensures backwards compatability. For Azure VM images we should do the same, once the cloud properties in the stemcell.MF file contain the parameter.