Add annotation to customize nginx location configuration

examples/customization/configuration-snippets/nginx/ingress.yaml

@@ -0,0 +1,18 @@
+apiVersion: extensions/v1beta1
+kind: Ingress
+metadata:
+  name: nginx-configuration-snippet
+  annotations:
+    kubernetes.io/ingress.class: "nginx"
+    ingress.kubernetes.io/configuration-snippet: |
+      more_set_headers "Request-Id: $request_id";
+
+spec:
+  rules:
+  - host: custom.configuration.com
+    http:
+      paths:
+      - backend:
+          serviceName: http-svc
+          servicePort: 80
+        path: /