What are the cheapest VMs that can be used to run metaflow in AKS (Azure)? And why is the default node pool using "Standard_D2_v2" instances which have temporary storage as opposed to using instances without it? Is the temporary storage necessary? Could "Standard_D2_v4" be used instead? (It has no temporary storage) Was anyone able to use spot instances successfuly in AKS? I've searched the slack and haven't found much