feat: update nginx-ingress configuration

- Add tolerations for restricted scheduling
- Set externalTrafficPolicy to 'Local'

These updates enhance the deployment configuration of the nginx-ingress.
They allow better scheduling of pods on nodes with specific taints and
facilitate the preservation of the client source IP for external
traffic.

nginx-ingress/vaules.yaml

@@ -250,7 +250,11 @@ controller:
   # -- Node tolerations for server scheduling to nodes with taints
   ## Ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/
   ##
-  tolerations: []
+  tolerations: 
+    - key: "scheduling"
+      operator: "Equal"
+      value: "restricted"
+      effect: "NoSchedule"
   #  - key: "key"
   #    operator: "Equal|Exists"
   #    value: "value"
@@ -521,7 +525,7 @@ controller:
 
     # -- External traffic policy of the external controller service. Set to "Local" to preserve source IP on providers supporting it.
     # Ref: https://kubernetes.io/docs/tasks/access-application-cluster/create-external-load-balancer/#preserving-the-client-source-ip
-    externalTrafficPolicy: ""
+    externalTrafficPolicy: "Local"
     # -- Session affinity of the external controller service. Must be either "None" or "ClientIP" if set. Defaults to "None".
     # Ref: https://kubernetes.io/docs/reference/networking/virtual-ips/#session-affinity
     sessionAffinity: ""