add source ip preservation detail (#19942)

add source ip preservation detail and change default externalTrafficPolicy to Local (default controller.service.type is LoadBalancer)

Signed-off-by: jfcoz <you@example.com>

incubator/haproxy-ingress/Chart.yaml

@@ -1,6 +1,6 @@
 apiVersion: v1
 name: haproxy-ingress
-version: 0.0.21
+version: 0.0.22
 appVersion: 0.7.2
 home: https://github.com/jcmoraisjr/haproxy-ingress
 description: Ingress controller implementation for haproxy loadbalancer.

incubator/haproxy-ingress/README.md

@@ -99,7 +99,7 @@ Parameter | Description | Default
 `controller.service.annotations` | annotations for controller service | `{}`
 `controller.service.labels` | labels for controller service | `{}`
 `controller.service.clusterIP` | internal controller cluster service IP | `""`
-`controller.service.externalTrafficPolicy` | external traffic policy | `Cluster`
+`controller.service.externalTrafficPolicy` | If `controller.service.type` is `NodePort` or `LoadBalancer`, set this to `Local` to enable [source IP preservation](https://kubernetes.io/docs/tutorials/services/source-ip/#source-ip-for-services-with-typenodeport) | `Local`
 `controller.service.externalIPs` | list of IP addresses at which the controller services are available | `[]`
 `controller.service.loadBalancerIP` | IP address to assign to load balancer (if supported) | `""`
 `controller.service.loadBalancerSourceRanges` |  | `[]`

incubator/haproxy-ingress/values.yaml

@@ -208,7 +208,7 @@ controller:
     ## Set external traffic policy to: "Local" to preserve source IP on
     ## providers supporting it
     ## Ref: https://kubernetes.io/docs/tutorials/services/source-ip/#source-ip-for-services-with-typeloadbalancer
-    externalTrafficPolicy: ""
+    externalTrafficPolicy: Local
 
     healthCheckNodePort: 0