Add AZArcAgentAPIVersion param for Azure IMDS parameter set

[semics-tech]

For legacy systems where the Azure Managed Identity Agent is not updated, we need a way to override the default api version of the

[rmbolger]

Hey @semics-tech. Thanks for the contribution. I had no clue the agent version affected the IMDS url, but it makes sense. The code as submitted doesn't work, but I can see the intent. I should be able to flesh it out into a working additional plugin param.

Do you of any online reference to find what agent versions support what API versions? If it exists, I'd like to add it to the documentation as well. Or put another way...if people find the default value isn't working. How can they find which version to use?

[semics-tech]

Hey @semics-tech. Thanks for the contribution. I had no clue the agent version affected the IMDS url, but it makes sense. The code as submitted doesn't work, but I can see the intent. I should be able to flesh it out into a working additional plugin param.

Do you of any online reference to find what agent versions support what API versions? If it exists, I'd like to add it to the documentation as well. Or put another way...if people find the default value isn't working. How can they find which version to use?

Apologies when I made this change I only had access to github and so couldn't sense check the code, thanks for fixing it!

I have had a look and the only thing I can find it this Azure Instance Metadata Service which just shows the available versions. To get the supported versions, it looks like you need to make a request to the GET /metadata/versions IMDS endpoint