How to connect to a Redis Server with mTLS from a pod in ServiceMesh?

Issue

• Redis client inside of the mesh which is trying to connect to Redis server outside of the OpenShift cluster.
• The connection must be mTLS.
• The following DestinationRule is used, but the Redis server does not receive the client's certificate:

apiVersion: networking.istio.io/v1alpha3
kind: DestinationRule
metadata:
  name: dr-redis-mtls
spec:
  host: redis.home.lan
  trafficPolicy:
    tls:
      mode: MUTUAL
      credentialName: secret-redis-client-certs