make and example envoy yaml for TlsKeyLog

@zhangbo1882
would you be so kind to add some example of [TlsKeyLog](https://github.com/envoyproxy/envoy/pull/19182) on a cluster?

thank you so much!!
Regards,
Goran.

`static_resources:
listeners:
- address:
socket_address:
address: 0.0.0.0
port_value: 10000
filter_chains:
- filters:
- name: envoy.filters.network.http_connection_manager
typed_config:
"@type": type.googleapis.com/envoy.extensions.filters.network.http_connection_manager.v3.HttpConnectionManager
codec_type: AUTO
stat_prefix: ingress_http
route_config:
name: local_route
virtual_hosts:
- name: app
domains:
- "*"
routes:
- match:
prefix: "/"
route:
cluster: service-https
http_filters:
- name: envoy.filters.http.router
typed_config:
"@type": type.googleapis.com/envoy.extensions.filters.http.router.v3.Router

clusters:
- name: service-https
type: STRICT_DNS
lb_policy: ROUND_ROBIN
load_assignment:
cluster_name: service-https
endpoints:
- lb_endpoints:
- endpoint:
address:
socket_address:
address: service-https
port_value: 443
transport_socket:
name: envoy.transport_sockets.tls
typed_config:
"@type": type.googleapis.com/envoy.extensions.transport_sockets.tls.v3.UpstreamTlsContext
transport_socket:
name: envoy.transport_sockets.tls
typed_config:
"@type": type.googleapis.com/envoy.extensions.transport_sockets.tls.v3.TlsKeyLog
path: /tmp/key.log`