Add GPU nodegroup

Author: GeorgianaElena

eksctl/dandi.jsonnet

@@ -28,6 +28,15 @@ local notebookNodes = [
     { instanceType: "r5.xlarge" },
     { instanceType: "r5.4xlarge" },
     { instanceType: "r5.16xlarge" },
+    {
+     instanceType: "g4dn.xlarge",
+     tags+: {
+         "k8s.io/cluster-autoscaler/node-template/resources/nvidia.com/gpu": "1"
+     },
+     // Allow provisioning GPUs across all AZs, to prevent situation where all
+     // GPUs in a single AZ are in use and no new nodes can be spawned
+     availabilityZones: masterAzs,
+    }
 ];
 local daskNodes = [
     // Node definitions for dask worker nodes. Config here is merged