},
                "route": {
                 "cluster": "prometheus_stats"
                }
               }
              ]
             }
            ]
           },
           "http_filters": [
            {
             "name": "envoy.filters.http.router",
             "typed_config": {
              "@type": "type.googleapis.com/envoy.extensions.filters.http.router.v3.Router"
             }

				},
			},
			expectedListener: listenertest.ListenerTest{FilterChains: []listenertest.FilterChainTest{
				{
					NetworkFilters: []string{
						wellknown.HTTPConnectionManager,
					},
					HTTPFilters: []string{
						xdsfilters.MxFilterName,
						xdsfilters.Alpn.GetName(),
						xdsfilters.Fault.GetName(), xdsfilters.Cors.GetName(), wellknown.Router,
					},
				},
			}},
		},
		{

	cfg := `
apiVersion: networking.istio.io/v1alpha3
kind: EnvoyFilter
metadata:
  name: outbound
spec:
  workloadSelector:
    labels:
      app: a
  configPatches:
  - applyTo: HTTP_FILTER
    match:
      context: SIDECAR_OUTBOUND
      listener:
        filterChain:
          filter:
            name: "envoy.filters.network.http_connection_manager"
            subFilter:

)

var (
	// envoy supported retry on header values
	supportedRetryOnPolicies = sets.New(
		// 'x-envoy-retry-on' supported policies:
		// https://www.envoyproxy.io/docs/envoy/latest/configuration/http/http_filters/router_filter.html#x-envoy-retry-on
		"5xx",
		"gateway-error",
		"reset",
		"connect-failure",
		"retriable-4xx",
		"refused-stream",
		"retriable-status-codes",
		"retriable-headers",

configPatches: description: One or more patches with match conditions. items: properties: applyTo: description: Specifies where in the Envoy configuration, the patch should be applied. enum: - INVALID - LISTENER - FILTER_CHAIN - NETWORK_FILTER - HTTP_FILTER - ROUTE_CONFIGURATION - VIRTUAL_HOST - HTTP_ROUTE - CLUSTER - EXTENSION_CONFIG - BOOTSTRAP - LISTENER_FILTER type: string match: description: Match on listener/route configuration/cluster. oneOf: - not: anyOf: - required: - listener - required:...