Add version upgrade checklist (#1545)

Author: deliahu

dev/versions.md

@@ -1,5 +1,18 @@
 # Upgrade notes
 
+## Things to check when updating versions
+
+* cluster up / info / down (works, and logs look good)
+* check metrics server pod logs
+* check cluster autoscaler pod logs
+* check pod -> cluster autoscaling on cpu or gpu or inferentia
+* check cluster autoscaling on cpu and gpu and inferentia
+* examples
+  * check logs, predictions
+  * check metrics, tracker
+  * make sure to try all 8 base images (tf/onnx/py gpu/cpu, tf/py inferentia)
+  * confirm GPUs are used when requested
+
 ## eksctl
 
 1. Find the latest release on [GitHub](https://github.com/weaveworks/eksctl/releases) and check the changelog