Support for AKS nginx ingress

For AKS, the nginx blocks the websocket connection and adding the  annotation below fixes it. Nginx support websocket application with below annotation
 nginx.org/websocket-services: "skipper-ingress"

https://docs.nginx.com/nginx-ingress-controller/configuration/ingress-resources/advanced-configuration-with-annotations/

Author: anoop7181

docs/deployment/overlays/1-namespaced-hpa/skipper/ingress.yaml

@@ -9,6 +9,7 @@ metadata:
     nginx.ingress.kubernetes.io/session-cookie-expires: "172800"
     nginx.ingress.kubernetes.io/session-cookie-max-age: "172800"
     nginx.ingress.kubernetes.io/session-cookie-name: rout
+    nginx.org/websocket-services: "skipper-ingress"
     kubernetes.io/ingress.class: "nginx"
 spec:
   rules: