add limitations on kubernetes compute target

Author: tangy1118

articles/machine-learning/how-to-attach-kubernetes-anywhere.md

@@ -74,6 +74,8 @@ A `KubernetesCompute` target in Azure Machine Learning workloads (training and m
 - The availability of **Preview features** in Azure Machine Learning isn't guaranteed.
 - Models (including the foundational model) from the **Model Catalog** and **Registry** aren't supported on Kubernetes online endpoints.
 - The process of creating a model inference deployment inside the cluster has a timeout limit of **20 minutes**. This includes downloading the image, downloading the model, and initializing the user scripts.
+- Azure Machine Learning extension support Kubernetes Baseline Pod Security Standard. 
+- Training on Kubernetes compute doesn't support auto scale nodes.
 
 ## Recommended best practices