_err: spec.concurrency in body should be greater than or equal to 0
apiVersion: networking.istio.io/v1beta1
kind: ProxyConfig
metadata:
  name: bad-concurrency
spec:
  concurrency: -1
---
_err: key must not be empty
apiVersion: networking.istio.io/v1beta1
kind: ProxyConfig
metadata:
  name: empty-key-selector
spec:
  selector:
    matchLabels:
      "": bar
