Add Wings BackendTrafficPolicy for WebSocket support

pelican/wings-backend-traffic.yaml

@@ -0,0 +1,15 @@
+apiVersion: gateway.envoyproxy.io/v1alpha1
+kind: BackendTrafficPolicy
+metadata:
+  name: wings-backend-traffic
+  namespace: pelican
+spec:
+  targetRefs:
+    - group: gateway.networking.k8s.io
+      kind: HTTPRoute
+      name: wings-route
+  timeout:
+    http:
+      connectionIdleTimeout: 3600s
+      requestTimeout: 0s
+  useClientProtocol: true