Add note regarding support for only Azure VMSS Uniform Orchestration mode
What does this MR do?
Add note regarding support for only Azure VMSS Uniform Orchestration mode
Why was this MR needed?
A prospective customer could not use the Runner on Azure with Fleeting. The root cause was that the customer configured Azure VMSS Flexible Orchestration, which we determined does not work with the current Fleeting implementation for Azure.