Istio-Proxy sidecar resource requirements overly excessive

[JamesClonk]

Describe the bug

The resource requirements configured for the Istio-Proxy sidecar for app instances seems to be a rather excessive, especially when compared to pushing a small golang app for example. In our environment this has caused apps to be unschedulable due to resource constraints from the K8s scheduler/nodes.

To Reproduce*

Steps to reproduce the behavior:

1. cf push my-small-golang-app -m 16m
2. kubectl -n cf-workloads describe pod/<app-instance-pod>

  opi:
    Limits:
      ephemeral-storage:  64M
      memory:             16M
    Requests:
      cpu:                10m
      ephemeral-storage:  64M
      memory:             16M

  istio-proxy:
    Limits:
      cpu:     2
      memory:  1Gi
    Requests:
      cpu:      100m
      memory:   128Mi

Expected behavior

Istio-Proxy should not have such excessive resource requests/limits set, when compared to an app that itself only requests 10m,16Mi itself.

cf-for-k8s SHA

https://github.com/cloudfoundry/cf-for-k8s/tree/7c65597af7a4de935994813658a5db182fbecac9

Cluster information

PKS