Moving ISTIO to ASM on safer-cluster-update-variant gke cluster.

Google is recommend migrating istio service mesh to Anthos Service mesh before Kubernetes version v1.25.

Could you please help me with the ASM integration to our open resource [GoogleCloudPlatform/fda-mystudies](https://github.com/GoogleCloudPlatform/fda-mystudies/blob/master/deployment/mystudies.hcl)

