steps to reproduce:

• deploy a 4.2 cluster using a dev preview installer
• install servicemesh operator using console
• install example SMCP and SMMR
  -> make sure to scale down pilot's resource requests due to MAISTRA-929
  -> I also had to disable grafana, prometheus, jaeger and kiali to have enough resources for service pods
• deploy sleep and httpbin service
• curl from sleep to httpbin
  Output is:

  {
    "headers": {
      "Accept": "*/*", 
      "Host": "httpbin:8080", 
      "User-Agent": "curl/7.64.0"
    }
  }
  

Expected output would include headers from envoy. Traffic does not go through the sidecars.

I reproduced this on:

• 4.2.0-0.nightly-2019-09-10-132016
• 4.2.0-0.nightly-2019-09-11-114314